AminetAminet
Search:
82659 packages online
About
Recent
Browse
Search
Upload
Setup
Services

gfx/ifx/ifx_jpeg.lha

Mirror:Random
Showing:i386-arosgeneric
No screenshot available
Short:JPEG ImageFX loader. PPC version (1.3)
Author:M.Smyk, S.Jedruszkiewicz(PPC version)
Uploader:bjsebo jota ii tuniv szczecin pl
Type:gfx/ifx
Replaces:gfx/ifx/ifx_jpeg.lha
Requires:ImageFX,ppc.library
Architecture:ppc-powerup
Date:1999-05-14
Download:http://aminet.net/gfx/ifx/ifx_jpeg.lha - View contents
Readme:http://aminet.net/gfx/ifx/ifx_jpeg.readme
Downloads:1341
                     PPC JPEG ImageFX loader.
                          version 1.3

 This is version 1.3 of PPC JPEG loader for ImageFX. Based on Miloslaw
Smyk 68k version. It uses JPEG library version 6b. Both normal and 
progressive JPEG's are supported.

INSTALATION:
 Copy file JPEG to ImageFX/modules/loaders/.
Remember to backup old version of JPEG loader (in case of bugs in this
release). Renaming the old JPEG loader is not enough - you should
move it into other directory) Make sure you have removed all JPEG files
(including JPEG.040 .000. 060) Also make sure you have JPEGTMP: assigned 
somewhere (T: is a good choice). Then copy the prefs file into 
ENVARC:ImageFX directory. I think ImageFX v3 uses env:ImageFX3 dir.
It is also safe to put this prefs file there. JPEG loader will check
both paths for prefs file.

USAGE:
 First take a look at envarc/ImageFX/JPEG_Loader file. 
The template is: "NOGUI/S,FU=FANCY_UPSAMPLING/S,DCT/K"
 NOGUI - no gui will be shown.
 FU    - Also called smoothing. If set smoothing will be enabled.
 DCT   - DCT method. There are 3 allowed:
         ISLOW - Use integer DCT method.
         IFAST - Use fast integer DCT (less accurate).
         FLOAT - Use floating-point DCT method.
			  The float method is very slightly more accurate than
			  the int method, but is much slower unless your machine
			  has very fast floating-point hardware.  Also note that
			  results of the floating-point method may vary slightly
			  across machines, while the integer methods should give
			  the same results everywhere.
         The fast integer method is much less accurate than the other two.


SPEED:
 I have tested this on BlizzPPC 68040/25 + 603/200. It is about 6 times 
faster than 68k version of JPEG loader. Loading 1400x1000 jpeg file
takes about 3 seconds. Loading the same file with 68k version took 14s.

BUGS:
     - reading corrupted JPEGs may cause crash. It happens
       when JPEG has got not complete file header. Be carefull
       with JPEG smaller than 2048 bytes.
     - progress bar does not work with progressive jpegs. 
       (in first phase) This is actually not bug, I just don't
       know how to implement this feature.

Please report bugs to: bjsebo at jota.ii.tuniv.szczecin.pl

IS IT FREE?
 Particulary yes. But this software is giftware, which means, if you like
 it, you should send cool stuff (chocolates, postcards, computers, cars etc.)
 to:

  Miloslaw Smyk                         Sebastian Jedruszkiewicz
  ul. Orawska 22/34            or       ul. P.Jasienicy 4/7
  70-131 Szczecin, POLAND               70-492 Szczecin, POLAND


HISTORY:
 v1.3 (11-05-99)
     - Finally removed the bug with no closing loaded JPEG file.
     - All errors are now shown in ImageFX requester.
     - Fixed GUI to be font sensitive. Thanks must go to Konrad Bielski
       for pointing me that.
     - Clicking close gadget in gui has now the same
       effect like 'Cancel'.

 v1.2 (06-05-99)
     - Fixed bug with errors handling.
     - replaced JPEG lib 6a with 6b.

 v1.1 (01.05.99)
     - Fixed problems with caches clearing on PPC side.

 v1.0 (30.04.99)
     - recompiled JPEG lib with latest egcs. 3x faster. egcs rulez ;)
     - Changed GUI a bit. Added new Image (W.F.M.H. + Venus Art ;)
     - Loader was looking for prefs file in env:ImageFX/ dir.
       Fixed to search both env:ImageFX and env:ImageFX3.

 v0.9 (29.04.99)
     - just received sources from Milek. Thanks a lot!
     - recompiled JPEG lib 6a with sasc.
     - created first working version of JPEG loader.


Contents of gfx/ifx/ifx_jpeg.lha
 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                  200     272  73.5% -lh5- 645d May  4  1999 JPEG_PPC/ENVARC/ImageFX/JPEG_Loader
[generic]                 1851    3772  49.1% -lh5- 4fd3 May 13  1999 JPEG_PPC/ifx_jpeg.readme
[generic]                81949  178396  45.9% -lh5- 9fe3 May 13  1999 jpeg_ppc/jpeg
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         3 files   84000  182440  46.0%            May 14  1999

Aminet © 1992-2019 Urban Müller and the Aminet team. Aminet contact address: <aminetaminet net>