From: Lars Magne Ingebrigtsen <larsi@gnus.org>
To: emacs-devel@gnu.org
Subject: Re: Slow image display over network
Date: Fri, 24 Sep 2010 17:55:41 +0200 [thread overview]
Message-ID: <m339sz5e6a.fsf@quimbies.gnus.org> (raw)
In-Reply-To: m3pqw3tg0w.fsf@verona.se
joakim@verona.se writes:
> (call-process "identify" nil "*imagemagic identify*" nil "-verbose" image-file) ;; "-ping" sometimes segfaults for me
Hm. That would make gnus-html more usable on a remote X, but adding
dependencies on yet another external program isn't all that attractive
to me...
> The C code would look vaguely similar to this(for the imagemagick loader):
>
> MagickWand *ping_wand;
> int siz_x; int siz_y;
> status = MagickPingImage(ping_wand, filename);
> numimages = MagickGetNumberImages(ping_wand);
> MagickGetImageResolution(ping_wand, &siz_x, &siz_y);
>
> To do this properly I would suppose one needs to invent a lisp structure
> compatible with the display spec that can hold image meta data, and have
> several implementations of the interface, one for imagemagick, one for
> when imagemagick isnt available, that could maybe use "file" etc
> ad-overengineering-nauseam. (also call the meta function depending on
> the image loader)
Yes, that would be the clean way to do it. However, since :resize and
stuff only works on the imagemagick image thing anyway, would it make
sense to special-case image-size for imagemagick images?
--
(domestic pets only, the antidote for overdose, milk.)
larsi@gnus.org * Lars Magne Ingebrigtsen
next prev parent reply other threads:[~2010-09-24 15:55 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-23 23:43 Slow image display over network Lars Magne Ingebrigtsen
2010-09-24 1:20 ` Leo
2010-09-24 7:58 ` Eli Zaretskii
2010-09-24 8:18 ` Leo
2010-09-24 1:47 ` Daniel Pittman
2010-09-24 7:31 ` Jan Djärv
2010-09-24 11:06 ` David Kastrup
2010-09-24 11:23 ` Lars Magne Ingebrigtsen
2010-09-24 11:51 ` David Kastrup
2010-09-24 11:54 ` Lars Magne Ingebrigtsen
2010-09-24 15:56 ` Chong Yidong
2010-09-24 12:05 ` joakim
2010-09-24 12:21 ` Leo
2010-09-24 12:56 ` Lars Magne Ingebrigtsen
2010-09-24 13:41 ` joakim
2010-09-24 15:55 ` Lars Magne Ingebrigtsen [this message]
2010-09-25 3:35 ` YAMAMOTO Mitsuharu
2010-09-24 6:25 ` Stephen J. Turnbull
2010-09-24 7:11 ` David Kastrup
2010-09-24 11:27 ` Lars Magne Ingebrigtsen
2010-09-24 11:59 ` David Kastrup
2010-09-24 12:57 ` Lars Magne Ingebrigtsen
2010-09-24 14:26 ` Jan Djärv
2010-09-24 11:25 ` Lars Magne Ingebrigtsen
2010-09-24 12:55 ` Lars Magne Ingebrigtsen
2010-09-24 7:44 ` joakim
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