Re: Sample-based thumbnailing built into libpng?
Andrew Klaassen <clawsoon-/[email protected]>
| Newsgroups | gmane.comp.graphics.png.general |
|---|---|
| Message-ID | <[email protected]> |
On Fri, 1/20/17, Glenn Randers-Pehrson <[email protected]> wrote: > I didn't see your mail right away. It went into the SPAM folder > evidently because of it came from a "yahoo.com" > account. Thanks for finding my email and responding despite that. > The message says that it's not > possible. That fact is still true. A PNG decoder needs > all the preceding bytes in order > to decode a row, because of how zlib compression and > PNG filtering work. Ah, I didn't realize that PNGs were compressed as a whole rather than chunk-by-chunk or line-by-line. Thanks for the clarification. Andrew ------------------------------------------------------------------------------ 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