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Message-Id: <201009172237.o8HMbWUH031558@delorie.com>
From: Juan Manuel Guerrero <juan DOT guerrero AT gmx DOT de>
To: djgpp-announce AT delorie DOT com
Subject: ANNOUNCE: DJGPP port of library jbig 2.0 uploaded.
Date: Sat, 18 Sep 2010 00:32:26 +0200
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This is a port of library jbig 2.0 to MSDOS/DJGPP.

  The JBIG-KIT lossless image compression library implements a highly effective
  data compression algorithm for bi-level high-resolution images such as fax
  pages or scanned documents.  This release adds a separate lightweight "T.85"
  version of the encoder and decoder library. This new T.85 library is optimized
  for embedded low-memory applications, such as printers and fax machines.
  It implements only the subset of the JBIG standard that is required by the
  ITU-T T.85 fax profile, namely only a single bit plane and no differential
  layers and some other restrictions.


  DJGPP specific changes.
  =======================

  The code of the utility programs has been changed in such a way that their
  stdin and stdout is always switched into binary mode.  This is necessary to
  be able to process data that is piped to stdin from other programs or piped
  from stdout to other programs.  It is clear that you will no longer be able
  to interrupt one of the  utility programs by pressing Cntl-C, but this will
  make the testsuite pass flawlessly and will make work the programs if used
  in a pipe.  If this program behaviour is not wanted, you will have to
  recompile those programs with the macro SET_STDIN_STDOUT_IN_BINARY_MODE set
  to 0 in the following four files:
  /pbmtools/jbgtopbm.c, /pbmtools/jbgtopbm85.c, /pbmtools/pbmtojbg.c and
  /pbmtools/pbmtojbg85.c.  In that case you will get binaries that can be
  interrupted from the console but that will not be able to read or write
  files from stdin and stdout because they operate in text mode.  Of course,
  the programs will always read and write in binary mode.  The code of the
  libraries itself have not been modified at all.

  The package does not need any configuration.  To compile the products simple
  use the provided makefiles.  As usual the diffs file is stored in /djgpp.

  To avoid file name clashes on SFN systems I have renamed the programs
  jbgtopbm85.exe and pbmtojbg85.exe to 85jbgtopbm.exe and 85pbmtojbg.exe.
  The library libjbig85.a will have the truncated file name libjbig8.a if
  extracted on SFN systems.  I have prefered not to change the library name
  in the hope that scripts and makefiles that relay on the original name
  continue working on SFN systems without the need of modifications.

  Please *read* the docs.



  The port consists of two packages that have been compiled using djdev203 and
  that can be downloaded from ftp.delorie.com and mirrors as (timestamp 2010-09-11):

    library jbig 2.0 headers, libs, programs and man format documentation:
    ftp://ftp.delorie.com/pub/djgpp/current/v2tk/jbig20b.zip

    library jbig 2.0 source:
    ftp://ftp.delorie.com/pub/djgpp/current/v2tk/jbig20s.zip


  For the convenience of the WinXP users the binaries has been produced
  a second time using the djdev204 beta library. This package is available
  at ftp.delorie.com and mirrors as (timestamp 2010-09-11):

    library jbig 2.0 headers, libs, programs and man format documentation:
    ftp://ftp.delorie.com/pub/djgpp/beta/v2tk/jbig20b.zip


  Send jbigkit specific bug reports to <mgk25 AT cl DOT cam DOT ac DOT uk>.
  Send suggestions and bug reports concerning the DJGPP port to
  comp.os.msdos.djgpp or <djgpp AT delorie DOT com>.


Enjoy.

  Guerrero, Juan Manuel <juan DOT guerrero AT gmx DOT de>