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Bug 129235 - Reading Photoshop *.AMP curve settings file
Reading Photoshop *.AMP curve settings file
Status: RESOLVED OBSOLETE
Product: GIMP
Classification: Other
Component: Tools
unspecified
Other All
: Normal enhancement
: Future
Assigned To: GIMP Bugs
GIMP Bugs
: 108174 (view as bug list)
Depends on:
Blocks:
 
 
Reported: 2003-12-13 00:30 UTC by Jack Zagaja
Modified: 2018-05-24 10:58 UTC
See Also:
GNOME target: ---
GNOME version: ---



Description Jack Zagaja 2003-12-13 00:30:23 UTC
Hello Gentelman,

Please  insert  load button in the Curves Dialog for reading Photoshop
*.AMP  curves  setting file. The structure of *.AMP is very simple. It
has  5  binary tables that have 256 entries that are 8-bit (byte). The
first   table  0000..00FFh  is  the  RGB  channel.  The  second  table
0100..01FFh  is  the  R  channel. The third table 0200..02FFh is the G
channel. The fourth table 0300..03FFh is the B channel. And, the fifth
table  0400..04FFh  is  a  "dummy"  channel that has to be filled with
codes  running from 00h, 01h, 02h, ...FFh. Table position nn00h is the
black end and table position nnFFh is the white end.

Regards --Jack,
Comment 1 Dave Neary 2003-12-13 12:30:45 UTC
Hi Jack,

Could you attach a couple of representative example files, and perhaps
a link to a definition document? I for one don't have a copy of
photoshop lying around.

Thanks,
Dave.
Comment 2 Jack Zagaja 2003-12-13 13:50:07 UTC
Dave,

Photoshop SDK 5 weigh ca. 5MB. I'm afraid it's hard to find in this 
document a full description. Nevertheless you will cope with that 
because I did it :)

AMP collection:

http://tme.szczecin.pl/~jacek/download.html

With kind regards --Jack,
Comment 3 Sven Neumann 2003-12-13 17:24:21 UTC
*** Bug 108174 has been marked as a duplicate of this bug. ***
Comment 4 Maurits Rijk 2004-05-26 12:47:34 UTC
* The requested URL /~jacek/download.html was not found on this server. *

Setting a few target milestones now that 2.2 is coming closer.
Comment 5 Sven Neumann 2005-01-21 10:47:01 UTC
Here's another resource that I've been pointed to in a thread at the GUG forum:
 http://www.fine-view.com/jp/lab/doc/ps6ffspecsv2.pdf

The poster in that thread claimed that the PS curves files would be have the
.acv extension. The spec on the other hand talks about .crv for curves files on
the Windows platform and 8bsc on Mac OS. Overall that's pretty confusing...
Comment 6 Alexandre Prokoudine 2012-09-22 21:41:14 UTC
http://registry.gimp.org/node/27003 provides an ACV converter.
Comment 7 GNOME Infrastructure Team 2018-05-24 10:58:18 UTC
-- GitLab Migration Automatic Message --

This bug has been migrated to GNOME's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.gnome.org/GNOME/gimp/issues/59.