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- Short: AkLJPG-dt V44.4 (LJPG, 68000-060. PPC)
- Author: Andreas R. Kleinert
- Uploader: Andreas_Kleinert@t-online.de
- Type: util/dtype
-
- *** FINAL RELEASE ***
-
- (68000, 020/030, 040 and 060 versions inside, plus PPC ELF module)
-
-
- 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 JPEG datatype, which is based on the
- Lossless JPEG Codec V1.0 - which implements 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.
-