Jpeginfo v1.7.1beta Copyright (c) 1995-2023, Timo Kokkonen.
REQUIREMENTS
Independent JPEG Group's jpeg library (libjpeg) version 6b or later.
(Alternatively should also work with libjpeg-turbo or mozjpeg)
TESTED PLATFORMS
Linux
MacOS
Solaris
IRIX
HP-UX
INSTALLATION
Installation should be very straightforward, just unpack the
tar file, run configure script, and then compile the program.
You may want to do something like this:
gunzip -c jpeginfo-1.7.0.tar.gz | tar xf -
cd jpeginfo-1.7.0
./configure
make
make strip
make install
NOTE! if 'configure' cannot find libjpeg.a or jpeglib.h, then
you must use the --with-jpeglib option when running configure,
see 'configure --help'.
HISTORY
v1.7.1 - add --files-from and --files-stdin,
minor fixed.
v1.7.0 - support for CSV output (--csv),
support for JSON output (--json),
add support for reading input file from stdin (--stdin),
add support for displaying column names (--header),
add SHA-512 sigest support (--sha512),
other minor fixes.
v1.6.2 - add SHA-256 digest support (--sha256 or -2),
improved Win32 support thanks to tumagonx,
other minor fixes.
v1.6.1 - support for new libjpeg v7 thanks to Guido Vollbeding,
fix to display of 8bit characters by Pierre Jarillon
v1.6.0 - added support for printing out Comments (from COM
markers), Exif format images are now also recognized
(no Exif marker decoding functionality, though).
v1.5 - configuration is now done with GNU autoconf,
program now uses free MD5 algorithm,
added file size as new field on reports,
program now returns exit code 1 if one or more of the jpegs
had any errors, useful for testing if particular jpeg is
ok from shell scripts,
also if you specify -q (--quiet) option twice on
command line, then program won't produce any output.
v1.4 - added support for calculating MD5 checksums.
v1.3 - alternative listing format (-l switch) added.
new column on reports displaying whether jpeg is
progressive or normal (P/N).
new switch -i for printing out even more information
about pictures: coding, density, CCIR601 sampling.
new switch -f for passing filenames to program from
file or stdin.
v1.2 - improved support for other platforms, minor fixes
v1.1.2 - small fixes, improvements to Makefile
v1.1 - modified to use Independent JPEG Group's new v.6a library,
minor fixes.
v1.0 - first public release
LATEST VERSION
Latest version is always available from:
http://www.iki.fi/tjko/projects.html
ACKNOWLEDGEMENT
- MD5 message-digest allgorithm used is public domain implementation
written by Colin Plumb.
- SHA-2 message-digest algorithm used is public domain implementation
by D. J. Bernstein (from NaCl library).
Timo <[email protected]>
15-Jan-2023
