From: Juri Linkov <juri@jurta.org>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: joakim@verona.se, Emacs development discussions <emacs-devel@gnu.org>
Subject: Image metadata (was: imagemmagick patch 5)
Date: Tue, 30 Mar 2010 19:12:31 +0300 [thread overview]
Message-ID: <874ojxhpqg.fsf_-_@mail.jurta.org> (raw)
In-Reply-To: <jwv6357ltc2.fsf-monnier+emacs@gnu.org> (Stefan Monnier's message of "Sun, 07 Mar 2010 16:23:57 -0500")
>>>> it returns a raw representation of the extension data of a given (sub)image.
>>> Again, what is meant by "extension" here?
>> It seems the term "extension" is GIF-specific. The GIF specification says
>> that extension blocks "extend" the 87a definition to allow extensions like
>> the Graphic Control Extension that specifies the animation delay time, etc.
>
>> The parameter `count' is used in animation, but unrelated to "extension".
>> Perhaps a more common term for `count' would be "metadata".
>
> Then we should rename image-extension-data to image-metadata, I think.
The problem is that one part of the current `image-extension-data'
is metadata, and another part is extension data. For instance, in
(count 44
255 "NETSCAPE2.0"
0 "^A^@^@"
249 "^D^M^@\377"
)
`count 44' is metadata, and the rest (with non-descriptive numeric keys)
is extension data.
Maybe the list returned by the new function `image-metadata' should be like:
(count 44
extension-data (255 "NETSCAPE2.0"
0 "^A^@^@"
249 "^D^M^@\377")
)
--
Juri Linkov
http://www.jurta.org/emacs/
next prev parent reply other threads:[~2010-03-30 16:12 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-03 7:39 imagemmagick patch 5 joakim
2010-03-03 19:34 ` Juri Linkov
2010-03-03 20:03 ` joakim
2010-03-06 17:59 ` Juri Linkov
2010-03-06 20:16 ` Stefan Monnier
2010-03-06 21:05 ` Juri Linkov
2010-03-07 14:37 ` Stefan Monnier
2010-03-07 19:08 ` Juri Linkov
2010-03-07 21:23 ` Stefan Monnier
2010-03-13 17:44 ` Kim F. Storm
2010-03-30 16:12 ` Juri Linkov [this message]
2010-03-30 20:36 ` Image metadata Stefan Monnier
2010-03-30 22:38 ` Juri Linkov
2010-03-31 1:22 ` Stefan Monnier
2010-04-02 21:51 ` joakim
2010-04-02 22:38 ` Juri Linkov
2010-03-04 2:41 ` imagemmagick patch 5 Stefan Monnier
2010-03-05 22:06 ` joakim
2010-03-05 22:30 ` Stefan Monnier
2010-03-05 23:56 ` Jan Djärv
2010-03-06 6:02 ` Stephen J. Turnbull
2010-04-15 9:34 ` joakim
2010-04-15 10:55 ` joakim
2010-04-16 20:45 ` Juri Linkov
2010-04-17 6:09 ` joakim
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