#7344: New libjpeg package
---------------------------+------------------------------------------------
Reporter: timdumol | Owner: mabshoff
Type: enhancement | Status: needs_review
Priority: major | Milestone:
Component: packages | Keywords:
Author: Tim Dumol | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
---------------------------+------------------------------------------------
Changes (by timdumol):
* cc: kcrisman (added)
* status: needs_work => needs_review
Old description:
> This is used by PIL (c.f. #7273). Inclusion as an optional or even as a
> standard package would be helpful.
>
> The latest version of the package is here:
> http://sage.math.washington.edu/home/timdumol/libjpeg-7.p1.spkg
New description:
This is used by PIL (c.f. #7273). Inclusion as an optional or even as a
standard package would be helpful.
The latest version of the package is here:
http://sage.math.washington.edu/home/timdumol/libjpeg-7.p2.spkg
--
Comment:
New package version here:
http://sage.math.washington.edu/home/timdumol/libjpeg-7.p2.spkg
As stated in #7818, some makefiles depend on $RM being unset or set to "rm
-f". The above code overrides any $RM setting, which otherwise causes
compilation failure (at least for me).
I am unsure of the GPL compatibility of libjpeg's licensing, but this
message on: http://www.mail-archive.com/mozilla-
[email protected]/msg00143.html seems to suggest that it is widely
considered GPL compatible. Otherwise, we may want to consider libjpeg-
turbo (http://sourceforge.net/projects/libjpeg-turbo/) and patch PIL to
use that.
Regarding review of this package:
The package may be reviewed by using the PIL package, as above:
{{{
sage: import Image
sage: im = Image.open("<your-jpeg-file-here>")
sage: im.resize((im.size[0]/2,im.size[1]/2))
sage: print im.format, im.size, im.mode
TIFF (455, 495) 1
sage: im.show()
sage: im.save("wherever.jpg")
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7344#comment:13>
Sage <http://www.sagemath.org>
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