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comparison mupdf-source/thirdparty/jbig2dec/README @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
1 jbig2dec is a decoder library and example utility implementing the JBIG2
2 bi-level image compression spec. Also known as ITU T.88 and ISO IEC
3 14492, and included by reference in Adobe's PDF version 1.4 and later.
4
5 The basic invocation is:
6
7 jbig2dec [-o <output file>] file.jbig2
8
9 It also supports separate 'global' and 'page' streams, generally
10 extracted from some embedded format:
11
12 jbig2dec [-o <output file>] <global_stream> <page_stream>
13
14 The program is only partially functional at this time, but should be
15 useful in some limited contexts. We welcome files that the decoder can't
16 handle, or renders incorrectly.
17
18 More information about jbig2dec and updated versions are available from:
19 https://jbig2dec.com/
20
21 A set of example files is available from
22 https://git.ghostscript.com/?p=tests.git;a=tree;f=jbig2
23
24 Development source code is kept in a git repository at:
25 http://git.ghostscript.com/?p=jbig2dec.git
26
27 Report bugs at https://bugs.ghostscript.com
28 For security issues please use the "Security - Other" product,
29 and for normal bugs the "jbig2dec" product.
30
31 Contact the developers on Discord: https://discord.gg/taPnFQp5gb
32 or via the mailing list <gs-devel@ghostscript.com>.