Short:    AkLJPG-dt V43.175 (LJPG, 68000-060)
Author:   Andreas_Kleinert@t-online.de
Uploader: Andreas_Kleinert@t-online.de
Type:     util/dtype

(68000, 020/030, 040 and 060 versions inside)


                               akLJPG.datatype

                          - licenseable FREEWARE -

           © 1997-98 by Andreas Ralph Kleinert. All rights reserved.
         (see also additional copyright notices inside the archive)

                    A PerSuaSiVe SoftWorX PRODUCT.

                        Needs Kickstart V3.x


 Program information
 -------------------
 akLJPG.datatype is a new JPEG datatype, which is based on the
 Lossless JPEG Codec V1.0 - which is a lossless JPEG format not
 directly related to the JFIF JPEG file format.

 It supports reading of LJPG graphics files.
 LJPG is a freely distributable lossless JPEG image compression package.

 There's a port of the encoding program "pnmtoljpg" available on Aminet
 as gfx/pbm/pnmtoljpg.lha, which compresses a Portable Pixmap (PPM, PNM-P6)
 or Portable Graymap image (PGM, PNM-P5) to a lossles JPEG (LJPG) image
 using the JPEG standard (DIS) lossless mode of operation.

 This datatype decodes a ljpg image to either 24 Bit RGB or 256 grayscales
 depending on the number of color components stored in the LJPG image file.

 --------------------------------------------------------------------------
 Supported output bitmap formats:

   - picture.datatype V39-42:

      o (upto) 256 palette colors
      o HAM6 or HAM8

   - picture.datatype V43 (CyberGraphX or Picasso96)  (*)

      o 24 Bit RGB

 Where upto 256 colors always will be exported unmodified,
 and 24 Bit data either is dithered or converted to HAM6/HAM8,
 if it can't be or should not be exported unmodified.

 (*) the latter one works with OCS/ECS/AGA, too
 --------------------------------------------------------------------------

 You must use the included preferences program for best configuration.

 See program archive for copyright and distribution information.