Re: [libpng:feature-requests] #32 Modern compressor
Chris Lilley <[email protected]>
| Newsgroups | gmane.comp.graphics.png.general |
|---|---|
| Message-ID | <[email protected]> |
On 2016-12-31 21:38, John Bowler wrote: > > I'm proposing simply adopting a new chunk 'eXIf' which contains the > raw profile, no keywords, no compression. The justification for that > is that it is trivial to handle for an existing app using even the > crusty libpng 1.2 that seems to be distributed with Ubuntu(!) > > Because the EXIF data is there in original encoding it's very easy to > extract from a PNG; scan through the file for a chunk named eXIf, the > preceding four bytes (chunk length) give the data length, the data > follows "eXIf" with a 4 byte CRC32 after that. That makes total sense to me. I like that proposal. -- Chris Lilley @svgeesus Technical Director @ W3C W3C Strategy Team, Core Web Design W3C Architecture & Technology Team, Core Web & Media ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ png-mng-misc mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/png-mng-misc