Externals: Add bzip2.
This commit is contained in:
degasus
parent
0a71dda8a0
commit
4385afdb0a
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@ -580,6 +580,14 @@ if(NOT XXHASH_FOUND)
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add_subdirectory(Externals/xxhash)
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endif()
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find_package(BZip2)
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if(BZIP2_FOUND)
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message(STATUS "Using shared bzip2")
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else()
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message(STATUS "Shared bzip2 not found, falling back to the static library")
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add_subdirectory(Externals/bzip2)
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endif()
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find_package(ZLIB)
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if(ZLIB_FOUND)
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message(STATUS "Using shared zlib")
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@ -0,0 +1,356 @@
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------------------------------------------------------------------
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This file is part of bzip2/libbzip2, a program and library for
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lossless, block-sorting data compression.
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bzip2/libbzip2 version 1.0.8 of 13 July 2019
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Copyright (C) 1996-2019 Julian Seward <jseward@acm.org>
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Please read the WARNING, DISCLAIMER and PATENTS sections in the
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README file.
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This program is released under the terms of the license contained
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in the file LICENSE.
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------------------------------------------------------------------
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0.9.0
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~~~~~
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First version.
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0.9.0a
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~~~~~~
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Removed 'ranlib' from Makefile, since most modern Unix-es
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don't need it, or even know about it.
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0.9.0b
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~~~~~~
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Fixed a problem with error reporting in bzip2.c. This does not effect
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the library in any way. Problem is: versions 0.9.0 and 0.9.0a (of the
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program proper) compress and decompress correctly, but give misleading
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error messages (internal panics) when an I/O error occurs, instead of
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reporting the problem correctly. This shouldn't give any data loss
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(as far as I can see), but is confusing.
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Made the inline declarations disappear for non-GCC compilers.
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0.9.0c
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~~~~~~
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Fixed some problems in the library pertaining to some boundary cases.
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This makes the library behave more correctly in those situations. The
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fixes apply only to features (calls and parameters) not used by
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bzip2.c, so the non-fixedness of them in previous versions has no
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effect on reliability of bzip2.c.
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In bzlib.c:
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* made zero-length BZ_FLUSH work correctly in bzCompress().
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* fixed bzWrite/bzRead to ignore zero-length requests.
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* fixed bzread to correctly handle read requests after EOF.
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* wrong parameter order in call to bzDecompressInit in
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bzBuffToBuffDecompress. Fixed.
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In compress.c:
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* changed setting of nGroups in sendMTFValues() so as to
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do a bit better on small files. This _does_ effect
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bzip2.c.
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0.9.5a
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~~~~~~
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Major change: add a fallback sorting algorithm (blocksort.c)
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to give reasonable behaviour even for very repetitive inputs.
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Nuked --repetitive-best and --repetitive-fast since they are
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no longer useful.
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Minor changes: mostly a whole bunch of small changes/
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bugfixes in the driver (bzip2.c). Changes pertaining to the
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user interface are:
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allow decompression of symlink'd files to stdout
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decompress/test files even without .bz2 extension
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give more accurate error messages for I/O errors
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when compressing/decompressing to stdout, don't catch control-C
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read flags from BZIP2 and BZIP environment variables
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decline to break hard links to a file unless forced with -f
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allow -c flag even with no filenames
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preserve file ownerships as far as possible
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make -s -1 give the expected block size (100k)
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add a flag -q --quiet to suppress nonessential warnings
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stop decoding flags after --, so files beginning in - can be handled
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resolved inconsistent naming: bzcat or bz2cat ?
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bzip2 --help now returns 0
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Programming-level changes are:
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fixed syntax error in GET_LL4 for Borland C++ 5.02
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let bzBuffToBuffDecompress return BZ_DATA_ERROR{_MAGIC}
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fix overshoot of mode-string end in bzopen_or_bzdopen
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wrapped bzlib.h in #ifdef __cplusplus ... extern "C" { ... }
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close file handles under all error conditions
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added minor mods so it compiles with DJGPP out of the box
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fixed Makefile so it doesn't give problems with BSD make
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fix uninitialised memory reads in dlltest.c
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0.9.5b
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~~~~~~
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Open stdin/stdout in binary mode for DJGPP.
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0.9.5c
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~~~~~~
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Changed BZ_N_OVERSHOOT to be ... + 2 instead of ... + 1. The + 1
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version could cause the sorted order to be wrong in some extremely
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obscure cases. Also changed setting of quadrant in blocksort.c.
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0.9.5d
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~~~~~~
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The only functional change is to make bzlibVersion() in the library
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return the correct string. This has no effect whatsoever on the
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functioning of the bzip2 program or library. Added a couple of casts
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so the library compiles without warnings at level 3 in MS Visual
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Studio 6.0. Included a Y2K statement in the file Y2K_INFO. All other
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changes are minor documentation changes.
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1.0
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~~~
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Several minor bugfixes and enhancements:
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* Large file support. The library uses 64-bit counters to
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count the volume of data passing through it. bzip2.c
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is now compiled with -D_FILE_OFFSET_BITS=64 to get large
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file support from the C library. -v correctly prints out
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file sizes greater than 4 gigabytes. All these changes have
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been made without assuming a 64-bit platform or a C compiler
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which supports 64-bit ints, so, except for the C library
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aspect, they are fully portable.
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* Decompression robustness. The library/program should be
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robust to any corruption of compressed data, detecting and
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handling _all_ corruption, instead of merely relying on
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the CRCs. What this means is that the program should
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never crash, given corrupted data, and the library should
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always return BZ_DATA_ERROR.
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* Fixed an obscure race-condition bug only ever observed on
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Solaris, in which, if you were very unlucky and issued
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control-C at exactly the wrong time, both input and output
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files would be deleted.
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* Don't run out of file handles on test/decompression when
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large numbers of files have invalid magic numbers.
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* Avoid library namespace pollution. Prefix all exported
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symbols with BZ2_.
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* Minor sorting enhancements from my DCC2000 paper.
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* Advance the version number to 1.0, so as to counteract the
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(false-in-this-case) impression some people have that programs
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with version numbers less than 1.0 are in some way, experimental,
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pre-release versions.
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* Create an initial Makefile-libbz2_so to build a shared library.
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Yes, I know I should really use libtool et al ...
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* Make the program exit with 2 instead of 0 when decompression
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fails due to a bad magic number (ie, an invalid bzip2 header).
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Also exit with 1 (as the manual claims :-) whenever a diagnostic
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message would have been printed AND the corresponding operation
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is aborted, for example
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bzip2: Output file xx already exists.
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When a diagnostic message is printed but the operation is not
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aborted, for example
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bzip2: Can't guess original name for wurble -- using wurble.out
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then the exit value 0 is returned, unless some other problem is
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also detected.
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I think it corresponds more closely to what the manual claims now.
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1.0.1
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~~~~~
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* Modified dlltest.c so it uses the new BZ2_ naming scheme.
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* Modified makefile-msc to fix minor build probs on Win2k.
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* Updated README.COMPILATION.PROBLEMS.
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There are no functionality changes or bug fixes relative to version
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1.0.0. This is just a documentation update + a fix for minor Win32
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build problems. For almost everyone, upgrading from 1.0.0 to 1.0.1 is
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utterly pointless. Don't bother.
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1.0.2
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~~~~~
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A bug fix release, addressing various minor issues which have appeared
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in the 18 or so months since 1.0.1 was released. Most of the fixes
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are to do with file-handling or documentation bugs. To the best of my
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knowledge, there have been no data-loss-causing bugs reported in the
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compression/decompression engine of 1.0.0 or 1.0.1.
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Note that this release does not improve the rather crude build system
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for Unix platforms. The general plan here is to autoconfiscate/
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libtoolise 1.0.2 soon after release, and release the result as 1.1.0
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or perhaps 1.2.0. That, however, is still just a plan at this point.
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Here are the changes in 1.0.2. Bug-reporters and/or patch-senders in
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parentheses.
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* Fix an infinite segfault loop in 1.0.1 when a directory is
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encountered in -f (force) mode.
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(Trond Eivind Glomsrod, Nicholas Nethercote, Volker Schmidt)
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* Avoid double fclose() of output file on certain I/O error paths.
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(Solar Designer)
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* Don't fail with internal error 1007 when fed a long stream (> 48MB)
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of byte 251. Also print useful message suggesting that 1007s may be
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caused by bad memory.
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(noticed by Juan Pedro Vallejo, fixed by me)
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* Fix uninitialised variable silly bug in demo prog dlltest.c.
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(Jorj Bauer)
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* Remove 512-MB limitation on recovered file size for bzip2recover
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on selected platforms which support 64-bit ints. At the moment
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all GCC supported platforms, and Win32.
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(me, Alson van der Meulen)
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* Hard-code header byte values, to give correct operation on platforms
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using EBCDIC as their native character set (IBM's OS/390).
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(Leland Lucius)
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* Copy file access times correctly.
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(Marty Leisner)
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* Add distclean and check targets to Makefile.
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(Michael Carmack)
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* Parameterise use of ar and ranlib in Makefile. Also add $(LDFLAGS).
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(Rich Ireland, Bo Thorsen)
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* Pass -p (create parent dirs as needed) to mkdir during make install.
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(Jeremy Fusco)
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* Dereference symlinks when copying file permissions in -f mode.
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(Volker Schmidt)
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* Majorly simplify implementation of uInt64_qrm10.
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(Bo Lindbergh)
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* Check the input file still exists before deleting the output one,
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when aborting in cleanUpAndFail().
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(Joerg Prante, Robert Linden, Matthias Krings)
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Also a bunch of patches courtesy of Philippe Troin, the Debian maintainer
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of bzip2:
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* Wrapper scripts (with manpages): bzdiff, bzgrep, bzmore.
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* Spelling changes and minor enhancements in bzip2.1.
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* Avoid race condition between creating the output file and setting its
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interim permissions safely, by using fopen_output_safely().
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No changes to bzip2recover since there is no issue with file
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permissions there.
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* do not print senseless report with -v when compressing an empty
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file.
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* bzcat -f works on non-bzip2 files.
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* do not try to escape shell meta-characters on unix (the shell takes
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care of these).
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* added --fast and --best aliases for -1 -9 for gzip compatibility.
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1.0.3 (15 Feb 05)
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~~~~~~~~~~~~~~~~~
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Fixes some minor bugs since the last version, 1.0.2.
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* Further robustification against corrupted compressed data.
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There are currently no known bitstreams which can cause the
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decompressor to crash, loop or access memory which does not
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belong to it. If you are using bzip2 or the library to
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decompress bitstreams from untrusted sources, an upgrade
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to 1.0.3 is recommended. This fixes CAN-2005-1260.
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* The documentation has been converted to XML, from which html
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and pdf can be derived.
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* Various minor bugs in the documentation have been fixed.
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* Fixes for various compilation warnings with newer versions of
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gcc, and on 64-bit platforms.
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* The BZ_NO_STDIO cpp symbol was not properly observed in 1.0.2.
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This has been fixed.
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1.0.4 (20 Dec 06)
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~~~~~~~~~~~~~~~~~
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Fixes some minor bugs since the last version, 1.0.3.
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* Fix file permissions race problem (CAN-2005-0953).
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* Avoid possible segfault in BZ2_bzclose. From Coverity's NetBSD
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scan.
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* 'const'/prototype cleanups in the C code.
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* Change default install location to /usr/local, and handle multiple
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'make install's without error.
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* Sanitise file names more carefully in bzgrep. Fixes CAN-2005-0758
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to the extent that applies to bzgrep.
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* Use 'mktemp' rather than 'tempfile' in bzdiff.
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* Tighten up a couple of assertions in blocksort.c following automated
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analysis.
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* Fix minor doc/comment bugs.
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1.0.5 (10 Dec 07)
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~~~~~~~~~~~~~~~~~
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Security fix only. Fixes CERT-FI 20469 as it applies to bzip2.
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1.0.6 (6 Sept 10)
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~~~~~~~~~~~~~~~~~
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* Security fix for CVE-2010-0405. This was reported by Mikolaj
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Izdebski.
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* Make the documentation build on Ubuntu 10.04
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1.0.7 (27 Jun 19)
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~~~~~~~~~~~~~~~~~
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* Fix undefined behavior in the macros SET_BH, CLEAR_BH, & ISSET_BH
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* bzip2: Fix return value when combining --test,-t and -q.
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* bzip2recover: Fix buffer overflow for large argv[0]
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* bzip2recover: Fix use after free issue with outFile (CVE-2016-3189)
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* Make sure nSelectors is not out of range (CVE-2019-12900)
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1.0.8 (13 Jul 19)
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~~~~~~~~~~~~~~~~~
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* Accept as many selectors as the file format allows.
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This relaxes the fix for CVE-2019-12900 from 1.0.7
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so that bzip2 allows decompression of bz2 files that
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use (too) many selectors again.
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* Fix handling of large (> 4GB) files on Windows.
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* Cleanup of bzdiff and bzgrep scripts so they don't use
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any bash extensions and handle multiple archives correctly.
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* There is now a bz2-files testsuite at
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https://sourceware.org/git/bzip2-tests.git
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@ -0,0 +1,77 @@
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project(bzip2 C)
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include(CheckTypeSize)
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include(CheckFunctionExists)
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include(CheckIncludeFile)
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include(CheckCSourceCompiles)
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check_include_file(sys/types.h HAVE_SYS_TYPES_H)
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check_include_file(stdint.h HAVE_STDINT_H)
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check_include_file(stddef.h HAVE_STDDEF_H)
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# Check to see if we have large file support
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set(CMAKE_REQUIRED_DEFINITIONS -D_LARGEFILE64_SOURCE=1)
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# We add these other definitions here because CheckTypeSize.cmake
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# in CMake 2.4.x does not automatically do so and we want
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# compatibility with CMake 2.4.x.
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if(HAVE_SYS_TYPES_H)
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list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_SYS_TYPES_H)
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endif()
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if(HAVE_STDINT_H)
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list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_STDINT_H)
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endif()
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if(HAVE_STDDEF_H)
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list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_STDDEF_H)
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endif()
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check_type_size(off64_t OFF64_T)
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if(HAVE_OFF64_T)
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add_definitions(-D_LARGEFILE64_SOURCE=1)
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endif()
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set(CMAKE_REQUIRED_DEFINITIONS) # clear variable
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# Check for fseeko
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check_function_exists(fseeko HAVE_FSEEKO)
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if(NOT HAVE_FSEEKO)
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add_definitions(-DNO_FSEEKO)
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endif()
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#
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# Check for unistd.h
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#
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check_include_file(unistd.h HAVE_UNISTD_H)
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if(HAVE_UNISTD_H)
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add_definitions(-DHAVE_UNISTD_H)
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endif()
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if(MSVC)
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add_definitions(-D_CRT_SECURE_NO_DEPRECATE)
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add_definitions(-D_CRT_NONSTDC_NO_DEPRECATE)
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endif()
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#============================================================================
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# bzip2
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#============================================================================
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set(BZIP2_PUBLIC_HDRS
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bzlib.h
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)
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set(BZIP2_PRIVATE_HDRS
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bzlib_private.h
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)
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set(BZIP2_SRCS
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blocksort.c
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huffman.c
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crctable.c
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randtable.c
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compress.c
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decompress.c
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bzlib.c
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)
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add_library(bzip2 STATIC ${BZIP2_SRCS} ${BZIP2_PUBLIC_HDRS} ${BZIP2_PRIVATE_HDRS})
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add_library(BZip2::BZip2 ALIAS bzip2)
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target_include_directories(bzip2
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PUBLIC
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${CMAKE_CURRENT_SOURCE_DIR}
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)
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@ -0,0 +1,42 @@
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--------------------------------------------------------------------------
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This program, "bzip2", the associated library "libbzip2", and all
|
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documentation, are copyright (C) 1996-2019 Julian R Seward. All
|
||||
rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions
|
||||
are met:
|
||||
|
||||
1. Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
|
||||
2. The origin of this software must not be misrepresented; you must
|
||||
not claim that you wrote the original software. If you use this
|
||||
software in a product, an acknowledgment in the product
|
||||
documentation would be appreciated but is not required.
|
||||
|
||||
3. Altered source versions must be plainly marked as such, and must
|
||||
not be misrepresented as being the original software.
|
||||
|
||||
4. The name of the author may not be used to endorse or promote
|
||||
products derived from this software without specific prior written
|
||||
permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
|
||||
OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||||
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
|
||||
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
|
||||
GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||||
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
||||
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
||||
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
||||
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
Julian Seward, jseward@acm.org
|
||||
bzip2/libbzip2 version 1.0.8 of 13 July 2019
|
||||
|
||||
--------------------------------------------------------------------------
|
||||
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,64 @@
|
|||
<?xml version="1.0" encoding="utf-8"?>
|
||||
<Project DefaultTargets="Build" ToolsVersion="16.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
|
||||
<ItemGroup Label="ProjectConfigurations">
|
||||
<ProjectConfiguration Include="Debug|ARM64">
|
||||
<Configuration>Debug</Configuration>
|
||||
<Platform>ARM64</Platform>
|
||||
</ProjectConfiguration>
|
||||
<ProjectConfiguration Include="Debug|x64">
|
||||
<Configuration>Debug</Configuration>
|
||||
<Platform>x64</Platform>
|
||||
</ProjectConfiguration>
|
||||
<ProjectConfiguration Include="Release|ARM64">
|
||||
<Configuration>Release</Configuration>
|
||||
<Platform>ARM64</Platform>
|
||||
</ProjectConfiguration>
|
||||
<ProjectConfiguration Include="Release|x64">
|
||||
<Configuration>Release</Configuration>
|
||||
<Platform>x64</Platform>
|
||||
</ProjectConfiguration>
|
||||
</ItemGroup>
|
||||
<PropertyGroup Label="Globals">
|
||||
<VCProjectVersion>16.0</VCProjectVersion>
|
||||
<ProjectGuid>{1D8C51D2-FFA4-418E-B183-9F42B6A6717E}</ProjectGuid>
|
||||
<RootNamespace>bzip2</RootNamespace>
|
||||
<WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
|
||||
</PropertyGroup>
|
||||
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
|
||||
<PropertyGroup Label="Configuration">
|
||||
<ConfigurationType>StaticLibrary</ConfigurationType>
|
||||
<PlatformToolset>v142</PlatformToolset>
|
||||
<CharacterSet>Unicode</CharacterSet>
|
||||
</PropertyGroup>
|
||||
<PropertyGroup Condition="'$(Configuration)'=='Debug'" Label="Configuration">
|
||||
<UseDebugLibraries>true</UseDebugLibraries>
|
||||
</PropertyGroup>
|
||||
<PropertyGroup Condition="'$(Configuration)'=='Release'" Label="Configuration">
|
||||
<UseDebugLibraries>false</UseDebugLibraries>
|
||||
</PropertyGroup>
|
||||
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
|
||||
<ImportGroup Label="ExtensionSettings">
|
||||
</ImportGroup>
|
||||
<ImportGroup Label="PropertySheets">
|
||||
<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
|
||||
<Import Project="..\..\Source\VSProps\Base.props" />
|
||||
<Import Project="..\..\Source\VSProps\ClDisableAllWarnings.props" />
|
||||
</ImportGroup>
|
||||
<PropertyGroup Label="UserMacros" />
|
||||
<ItemGroup>
|
||||
<ClCompile Include="blocksort.c" />
|
||||
<ClCompile Include="bzlib.c" />
|
||||
<ClCompile Include="compress.c" />
|
||||
<ClCompile Include="crctable.c" />
|
||||
<ClCompile Include="decompress.c" />
|
||||
<ClCompile Include="huffman.c" />
|
||||
<ClCompile Include="randtable.c" />
|
||||
</ItemGroup>
|
||||
<ItemGroup>
|
||||
<ClInclude Include="bzlib.h" />
|
||||
<ClInclude Include="bzlib_private.h" />
|
||||
</ItemGroup>
|
||||
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
|
||||
<ImportGroup Label="ExtensionTargets">
|
||||
</ImportGroup>
|
||||
</Project>
|
||||
|
|
@ -0,0 +1,16 @@
|
|||
<?xml version="1.0" encoding="utf-8"?>
|
||||
<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
|
||||
<ItemGroup>
|
||||
<ClCompile Include="blocksort.c" />
|
||||
<ClCompile Include="bzlib.c" />
|
||||
<ClCompile Include="compress.c" />
|
||||
<ClCompile Include="crctable.c" />
|
||||
<ClCompile Include="decompress.c" />
|
||||
<ClCompile Include="huffman.c" />
|
||||
<ClCompile Include="randtable.c" />
|
||||
</ItemGroup>
|
||||
<ItemGroup>
|
||||
<ClInclude Include="bzlib.h" />
|
||||
<ClInclude Include="bzlib_private.h" />
|
||||
</ItemGroup>
|
||||
</Project>
|
||||
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,282 @@
|
|||
|
||||
/*-------------------------------------------------------------*/
|
||||
/*--- Public header file for the library. ---*/
|
||||
/*--- bzlib.h ---*/
|
||||
/*-------------------------------------------------------------*/
|
||||
|
||||
/* ------------------------------------------------------------------
|
||||
This file is part of bzip2/libbzip2, a program and library for
|
||||
lossless, block-sorting data compression.
|
||||
|
||||
bzip2/libbzip2 version 1.0.8 of 13 July 2019
|
||||
Copyright (C) 1996-2019 Julian Seward <jseward@acm.org>
|
||||
|
||||
Please read the WARNING, DISCLAIMER and PATENTS sections in the
|
||||
README file.
|
||||
|
||||
This program is released under the terms of the license contained
|
||||
in the file LICENSE.
|
||||
------------------------------------------------------------------ */
|
||||
|
||||
|
||||
#ifndef _BZLIB_H
|
||||
#define _BZLIB_H
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
#define BZ_RUN 0
|
||||
#define BZ_FLUSH 1
|
||||
#define BZ_FINISH 2
|
||||
|
||||
#define BZ_OK 0
|
||||
#define BZ_RUN_OK 1
|
||||
#define BZ_FLUSH_OK 2
|
||||
#define BZ_FINISH_OK 3
|
||||
#define BZ_STREAM_END 4
|
||||
#define BZ_SEQUENCE_ERROR (-1)
|
||||
#define BZ_PARAM_ERROR (-2)
|
||||
#define BZ_MEM_ERROR (-3)
|
||||
#define BZ_DATA_ERROR (-4)
|
||||
#define BZ_DATA_ERROR_MAGIC (-5)
|
||||
#define BZ_IO_ERROR (-6)
|
||||
#define BZ_UNEXPECTED_EOF (-7)
|
||||
#define BZ_OUTBUFF_FULL (-8)
|
||||
#define BZ_CONFIG_ERROR (-9)
|
||||
|
||||
typedef
|
||||
struct {
|
||||
char *next_in;
|
||||
unsigned int avail_in;
|
||||
unsigned int total_in_lo32;
|
||||
unsigned int total_in_hi32;
|
||||
|
||||
char *next_out;
|
||||
unsigned int avail_out;
|
||||
unsigned int total_out_lo32;
|
||||
unsigned int total_out_hi32;
|
||||
|
||||
void *state;
|
||||
|
||||
void *(*bzalloc)(void *,int,int);
|
||||
void (*bzfree)(void *,void *);
|
||||
void *opaque;
|
||||
}
|
||||
bz_stream;
|
||||
|
||||
|
||||
#ifndef BZ_IMPORT
|
||||
#define BZ_EXPORT
|
||||
#endif
|
||||
|
||||
#ifndef BZ_NO_STDIO
|
||||
/* Need a definitition for FILE */
|
||||
#include <stdio.h>
|
||||
#endif
|
||||
|
||||
#ifdef _WIN32
|
||||
# include <windows.h>
|
||||
# ifdef small
|
||||
/* windows.h define small to char */
|
||||
# undef small
|
||||
# endif
|
||||
# ifdef BZ_EXPORT
|
||||
# define BZ_API(func) WINAPI func
|
||||
# define BZ_EXTERN extern
|
||||
# else
|
||||
/* import windows dll dynamically */
|
||||
# define BZ_API(func) (WINAPI * func)
|
||||
# define BZ_EXTERN
|
||||
# endif
|
||||
#else
|
||||
# define BZ_API(func) func
|
||||
# define BZ_EXTERN extern
|
||||
#endif
|
||||
|
||||
|
||||
/*-- Core (low-level) library functions --*/
|
||||
|
||||
BZ_EXTERN int BZ_API(BZ2_bzCompressInit) (
|
||||
bz_stream* strm,
|
||||
int blockSize100k,
|
||||
int verbosity,
|
||||
int workFactor
|
||||
);
|
||||
|
||||
BZ_EXTERN int BZ_API(BZ2_bzCompress) (
|
||||
bz_stream* strm,
|
||||
int action
|
||||
);
|
||||
|
||||
BZ_EXTERN int BZ_API(BZ2_bzCompressEnd) (
|
||||
bz_stream* strm
|
||||
);
|
||||
|
||||
BZ_EXTERN int BZ_API(BZ2_bzDecompressInit) (
|
||||
bz_stream *strm,
|
||||
int verbosity,
|
||||
int small
|
||||
);
|
||||
|
||||
BZ_EXTERN int BZ_API(BZ2_bzDecompress) (
|
||||
bz_stream* strm
|
||||
);
|
||||
|
||||
BZ_EXTERN int BZ_API(BZ2_bzDecompressEnd) (
|
||||
bz_stream *strm
|
||||
);
|
||||
|
||||
|
||||
|
||||
/*-- High(er) level library functions --*/
|
||||
|
||||
#ifndef BZ_NO_STDIO
|
||||
#define BZ_MAX_UNUSED 5000
|
||||
|
||||
typedef void BZFILE;
|
||||
|
||||
BZ_EXTERN BZFILE* BZ_API(BZ2_bzReadOpen) (
|
||||
int* bzerror,
|
||||
FILE* f,
|
||||
int verbosity,
|
||||
int small,
|
||||
void* unused,
|
||||
int nUnused
|
||||
);
|
||||
|
||||
BZ_EXTERN void BZ_API(BZ2_bzReadClose) (
|
||||
int* bzerror,
|
||||
BZFILE* b
|
||||
);
|
||||
|
||||
BZ_EXTERN void BZ_API(BZ2_bzReadGetUnused) (
|
||||
int* bzerror,
|
||||
BZFILE* b,
|
||||
void** unused,
|
||||
int* nUnused
|
||||
);
|
||||
|
||||
BZ_EXTERN int BZ_API(BZ2_bzRead) (
|
||||
int* bzerror,
|
||||
BZFILE* b,
|
||||
void* buf,
|
||||
int len
|
||||
);
|
||||
|
||||
BZ_EXTERN BZFILE* BZ_API(BZ2_bzWriteOpen) (
|
||||
int* bzerror,
|
||||
FILE* f,
|
||||
int blockSize100k,
|
||||
int verbosity,
|
||||
int workFactor
|
||||
);
|
||||
|
||||
BZ_EXTERN void BZ_API(BZ2_bzWrite) (
|
||||
int* bzerror,
|
||||
BZFILE* b,
|
||||
void* buf,
|
||||
int len
|
||||
);
|
||||
|
||||
BZ_EXTERN void BZ_API(BZ2_bzWriteClose) (
|
||||
int* bzerror,
|
||||
BZFILE* b,
|
||||
int abandon,
|
||||
unsigned int* nbytes_in,
|
||||
unsigned int* nbytes_out
|
||||
);
|
||||
|
||||
BZ_EXTERN void BZ_API(BZ2_bzWriteClose64) (
|
||||
int* bzerror,
|
||||
BZFILE* b,
|
||||
int abandon,
|
||||
unsigned int* nbytes_in_lo32,
|
||||
unsigned int* nbytes_in_hi32,
|
||||
unsigned int* nbytes_out_lo32,
|
||||
unsigned int* nbytes_out_hi32
|
||||
);
|
||||
#endif
|
||||
|
||||
|
||||
/*-- Utility functions --*/
|
||||
|
||||
BZ_EXTERN int BZ_API(BZ2_bzBuffToBuffCompress) (
|
||||
char* dest,
|
||||
unsigned int* destLen,
|
||||
char* source,
|
||||
unsigned int sourceLen,
|
||||
int blockSize100k,
|
||||
int verbosity,
|
||||
int workFactor
|
||||
);
|
||||
|
||||
BZ_EXTERN int BZ_API(BZ2_bzBuffToBuffDecompress) (
|
||||
char* dest,
|
||||
unsigned int* destLen,
|
||||
char* source,
|
||||
unsigned int sourceLen,
|
||||
int small,
|
||||
int verbosity
|
||||
);
|
||||
|
||||
|
||||
/*--
|
||||
Code contributed by Yoshioka Tsuneo (tsuneo@rr.iij4u.or.jp)
|
||||
to support better zlib compatibility.
|
||||
This code is not _officially_ part of libbzip2 (yet);
|
||||
I haven't tested it, documented it, or considered the
|
||||
threading-safeness of it.
|
||||
If this code breaks, please contact both Yoshioka and me.
|
||||
--*/
|
||||
|
||||
BZ_EXTERN const char * BZ_API(BZ2_bzlibVersion) (
|
||||
void
|
||||
);
|
||||
|
||||
#ifndef BZ_NO_STDIO
|
||||
BZ_EXTERN BZFILE * BZ_API(BZ2_bzopen) (
|
||||
const char *path,
|
||||
const char *mode
|
||||
);
|
||||
|
||||
BZ_EXTERN BZFILE * BZ_API(BZ2_bzdopen) (
|
||||
int fd,
|
||||
const char *mode
|
||||
);
|
||||
|
||||
BZ_EXTERN int BZ_API(BZ2_bzread) (
|
||||
BZFILE* b,
|
||||
void* buf,
|
||||
int len
|
||||
);
|
||||
|
||||
BZ_EXTERN int BZ_API(BZ2_bzwrite) (
|
||||
BZFILE* b,
|
||||
void* buf,
|
||||
int len
|
||||
);
|
||||
|
||||
BZ_EXTERN int BZ_API(BZ2_bzflush) (
|
||||
BZFILE* b
|
||||
);
|
||||
|
||||
BZ_EXTERN void BZ_API(BZ2_bzclose) (
|
||||
BZFILE* b
|
||||
);
|
||||
|
||||
BZ_EXTERN const char * BZ_API(BZ2_bzerror) (
|
||||
BZFILE *b,
|
||||
int *errnum
|
||||
);
|
||||
#endif
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif
|
||||
|
||||
/*-------------------------------------------------------------*/
|
||||
/*--- end bzlib.h ---*/
|
||||
/*-------------------------------------------------------------*/
|
||||
|
|
@ -0,0 +1,509 @@
|
|||
|
||||
/*-------------------------------------------------------------*/
|
||||
/*--- Private header file for the library. ---*/
|
||||
/*--- bzlib_private.h ---*/
|
||||
/*-------------------------------------------------------------*/
|
||||
|
||||
/* ------------------------------------------------------------------
|
||||
This file is part of bzip2/libbzip2, a program and library for
|
||||
lossless, block-sorting data compression.
|
||||
|
||||
bzip2/libbzip2 version 1.0.8 of 13 July 2019
|
||||
Copyright (C) 1996-2019 Julian Seward <jseward@acm.org>
|
||||
|
||||
Please read the WARNING, DISCLAIMER and PATENTS sections in the
|
||||
README file.
|
||||
|
||||
This program is released under the terms of the license contained
|
||||
in the file LICENSE.
|
||||
------------------------------------------------------------------ */
|
||||
|
||||
|
||||
#ifndef _BZLIB_PRIVATE_H
|
||||
#define _BZLIB_PRIVATE_H
|
||||
|
||||
#include <stdlib.h>
|
||||
|
||||
#ifndef BZ_NO_STDIO
|
||||
#include <stdio.h>
|
||||
#include <ctype.h>
|
||||
#include <string.h>
|
||||
#endif
|
||||
|
||||
#include "bzlib.h"
|
||||
|
||||
|
||||
|
||||
/*-- General stuff. --*/
|
||||
|
||||
#define BZ_VERSION "1.0.8, 13-Jul-2019"
|
||||
|
||||
typedef char Char;
|
||||
typedef unsigned char Bool;
|
||||
typedef unsigned char UChar;
|
||||
typedef int Int32;
|
||||
typedef unsigned int UInt32;
|
||||
typedef short Int16;
|
||||
typedef unsigned short UInt16;
|
||||
|
||||
#define True ((Bool)1)
|
||||
#define False ((Bool)0)
|
||||
|
||||
#ifndef __GNUC__
|
||||
#define __inline__ /* */
|
||||
#endif
|
||||
|
||||
#ifndef BZ_NO_STDIO
|
||||
|
||||
extern void BZ2_bz__AssertH__fail ( int errcode );
|
||||
#define AssertH(cond,errcode) \
|
||||
{ if (!(cond)) BZ2_bz__AssertH__fail ( errcode ); }
|
||||
|
||||
#if BZ_DEBUG
|
||||
#define AssertD(cond,msg) \
|
||||
{ if (!(cond)) { \
|
||||
fprintf ( stderr, \
|
||||
"\n\nlibbzip2(debug build): internal error\n\t%s\n", msg );\
|
||||
exit(1); \
|
||||
}}
|
||||
#else
|
||||
#define AssertD(cond,msg) /* */
|
||||
#endif
|
||||
|
||||
#define VPrintf0(zf) \
|
||||
fprintf(stderr,zf)
|
||||
#define VPrintf1(zf,za1) \
|
||||
fprintf(stderr,zf,za1)
|
||||
#define VPrintf2(zf,za1,za2) \
|
||||
fprintf(stderr,zf,za1,za2)
|
||||
#define VPrintf3(zf,za1,za2,za3) \
|
||||
fprintf(stderr,zf,za1,za2,za3)
|
||||
#define VPrintf4(zf,za1,za2,za3,za4) \
|
||||
fprintf(stderr,zf,za1,za2,za3,za4)
|
||||
#define VPrintf5(zf,za1,za2,za3,za4,za5) \
|
||||
fprintf(stderr,zf,za1,za2,za3,za4,za5)
|
||||
|
||||
#else
|
||||
|
||||
extern void bz_internal_error ( int errcode );
|
||||
#define AssertH(cond,errcode) \
|
||||
{ if (!(cond)) bz_internal_error ( errcode ); }
|
||||
#define AssertD(cond,msg) do { } while (0)
|
||||
#define VPrintf0(zf) do { } while (0)
|
||||
#define VPrintf1(zf,za1) do { } while (0)
|
||||
#define VPrintf2(zf,za1,za2) do { } while (0)
|
||||
#define VPrintf3(zf,za1,za2,za3) do { } while (0)
|
||||
#define VPrintf4(zf,za1,za2,za3,za4) do { } while (0)
|
||||
#define VPrintf5(zf,za1,za2,za3,za4,za5) do { } while (0)
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
#define BZALLOC(nnn) (strm->bzalloc)(strm->opaque,(nnn),1)
|
||||
#define BZFREE(ppp) (strm->bzfree)(strm->opaque,(ppp))
|
||||
|
||||
|
||||
/*-- Header bytes. --*/
|
||||
|
||||
#define BZ_HDR_B 0x42 /* 'B' */
|
||||
#define BZ_HDR_Z 0x5a /* 'Z' */
|
||||
#define BZ_HDR_h 0x68 /* 'h' */
|
||||
#define BZ_HDR_0 0x30 /* '0' */
|
||||
|
||||
/*-- Constants for the back end. --*/
|
||||
|
||||
#define BZ_MAX_ALPHA_SIZE 258
|
||||
#define BZ_MAX_CODE_LEN 23
|
||||
|
||||
#define BZ_RUNA 0
|
||||
#define BZ_RUNB 1
|
||||
|
||||
#define BZ_N_GROUPS 6
|
||||
#define BZ_G_SIZE 50
|
||||
#define BZ_N_ITERS 4
|
||||
|
||||
#define BZ_MAX_SELECTORS (2 + (900000 / BZ_G_SIZE))
|
||||
|
||||
|
||||
|
||||
/*-- Stuff for randomising repetitive blocks. --*/
|
||||
|
||||
extern Int32 BZ2_rNums[512];
|
||||
|
||||
#define BZ_RAND_DECLS \
|
||||
Int32 rNToGo; \
|
||||
Int32 rTPos \
|
||||
|
||||
#define BZ_RAND_INIT_MASK \
|
||||
s->rNToGo = 0; \
|
||||
s->rTPos = 0 \
|
||||
|
||||
#define BZ_RAND_MASK ((s->rNToGo == 1) ? 1 : 0)
|
||||
|
||||
#define BZ_RAND_UPD_MASK \
|
||||
if (s->rNToGo == 0) { \
|
||||
s->rNToGo = BZ2_rNums[s->rTPos]; \
|
||||
s->rTPos++; \
|
||||
if (s->rTPos == 512) s->rTPos = 0; \
|
||||
} \
|
||||
s->rNToGo--;
|
||||
|
||||
|
||||
|
||||
/*-- Stuff for doing CRCs. --*/
|
||||
|
||||
extern UInt32 BZ2_crc32Table[256];
|
||||
|
||||
#define BZ_INITIALISE_CRC(crcVar) \
|
||||
{ \
|
||||
crcVar = 0xffffffffL; \
|
||||
}
|
||||
|
||||
#define BZ_FINALISE_CRC(crcVar) \
|
||||
{ \
|
||||
crcVar = ~(crcVar); \
|
||||
}
|
||||
|
||||
#define BZ_UPDATE_CRC(crcVar,cha) \
|
||||
{ \
|
||||
crcVar = (crcVar << 8) ^ \
|
||||
BZ2_crc32Table[(crcVar >> 24) ^ \
|
||||
((UChar)cha)]; \
|
||||
}
|
||||
|
||||
|
||||
|
||||
/*-- States and modes for compression. --*/
|
||||
|
||||
#define BZ_M_IDLE 1
|
||||
#define BZ_M_RUNNING 2
|
||||
#define BZ_M_FLUSHING 3
|
||||
#define BZ_M_FINISHING 4
|
||||
|
||||
#define BZ_S_OUTPUT 1
|
||||
#define BZ_S_INPUT 2
|
||||
|
||||
#define BZ_N_RADIX 2
|
||||
#define BZ_N_QSORT 12
|
||||
#define BZ_N_SHELL 18
|
||||
#define BZ_N_OVERSHOOT (BZ_N_RADIX + BZ_N_QSORT + BZ_N_SHELL + 2)
|
||||
|
||||
|
||||
|
||||
|
||||
/*-- Structure holding all the compression-side stuff. --*/
|
||||
|
||||
typedef
|
||||
struct {
|
||||
/* pointer back to the struct bz_stream */
|
||||
bz_stream* strm;
|
||||
|
||||
/* mode this stream is in, and whether inputting */
|
||||
/* or outputting data */
|
||||
Int32 mode;
|
||||
Int32 state;
|
||||
|
||||
/* remembers avail_in when flush/finish requested */
|
||||
UInt32 avail_in_expect;
|
||||
|
||||
/* for doing the block sorting */
|
||||
UInt32* arr1;
|
||||
UInt32* arr2;
|
||||
UInt32* ftab;
|
||||
Int32 origPtr;
|
||||
|
||||
/* aliases for arr1 and arr2 */
|
||||
UInt32* ptr;
|
||||
UChar* block;
|
||||
UInt16* mtfv;
|
||||
UChar* zbits;
|
||||
|
||||
/* for deciding when to use the fallback sorting algorithm */
|
||||
Int32 workFactor;
|
||||
|
||||
/* run-length-encoding of the input */
|
||||
UInt32 state_in_ch;
|
||||
Int32 state_in_len;
|
||||
BZ_RAND_DECLS;
|
||||
|
||||
/* input and output limits and current posns */
|
||||
Int32 nblock;
|
||||
Int32 nblockMAX;
|
||||
Int32 numZ;
|
||||
Int32 state_out_pos;
|
||||
|
||||
/* map of bytes used in block */
|
||||
Int32 nInUse;
|
||||
Bool inUse[256];
|
||||
UChar unseqToSeq[256];
|
||||
|
||||
/* the buffer for bit stream creation */
|
||||
UInt32 bsBuff;
|
||||
Int32 bsLive;
|
||||
|
||||
/* block and combined CRCs */
|
||||
UInt32 blockCRC;
|
||||
UInt32 combinedCRC;
|
||||
|
||||
/* misc administratium */
|
||||
Int32 verbosity;
|
||||
Int32 blockNo;
|
||||
Int32 blockSize100k;
|
||||
|
||||
/* stuff for coding the MTF values */
|
||||
Int32 nMTF;
|
||||
Int32 mtfFreq [BZ_MAX_ALPHA_SIZE];
|
||||
UChar selector [BZ_MAX_SELECTORS];
|
||||
UChar selectorMtf[BZ_MAX_SELECTORS];
|
||||
|
||||
UChar len [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
|
||||
Int32 code [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
|
||||
Int32 rfreq [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
|
||||
/* second dimension: only 3 needed; 4 makes index calculations faster */
|
||||
UInt32 len_pack[BZ_MAX_ALPHA_SIZE][4];
|
||||
|
||||
}
|
||||
EState;
|
||||
|
||||
|
||||
|
||||
/*-- externs for compression. --*/
|
||||
|
||||
extern void
|
||||
BZ2_blockSort ( EState* );
|
||||
|
||||
extern void
|
||||
BZ2_compressBlock ( EState*, Bool );
|
||||
|
||||
extern void
|
||||
BZ2_bsInitWrite ( EState* );
|
||||
|
||||
extern void
|
||||
BZ2_hbAssignCodes ( Int32*, UChar*, Int32, Int32, Int32 );
|
||||
|
||||
extern void
|
||||
BZ2_hbMakeCodeLengths ( UChar*, Int32*, Int32, Int32 );
|
||||
|
||||
|
||||
|
||||
/*-- states for decompression. --*/
|
||||
|
||||
#define BZ_X_IDLE 1
|
||||
#define BZ_X_OUTPUT 2
|
||||
|
||||
#define BZ_X_MAGIC_1 10
|
||||
#define BZ_X_MAGIC_2 11
|
||||
#define BZ_X_MAGIC_3 12
|
||||
#define BZ_X_MAGIC_4 13
|
||||
#define BZ_X_BLKHDR_1 14
|
||||
#define BZ_X_BLKHDR_2 15
|
||||
#define BZ_X_BLKHDR_3 16
|
||||
#define BZ_X_BLKHDR_4 17
|
||||
#define BZ_X_BLKHDR_5 18
|
||||
#define BZ_X_BLKHDR_6 19
|
||||
#define BZ_X_BCRC_1 20
|
||||
#define BZ_X_BCRC_2 21
|
||||
#define BZ_X_BCRC_3 22
|
||||
#define BZ_X_BCRC_4 23
|
||||
#define BZ_X_RANDBIT 24
|
||||
#define BZ_X_ORIGPTR_1 25
|
||||
#define BZ_X_ORIGPTR_2 26
|
||||
#define BZ_X_ORIGPTR_3 27
|
||||
#define BZ_X_MAPPING_1 28
|
||||
#define BZ_X_MAPPING_2 29
|
||||
#define BZ_X_SELECTOR_1 30
|
||||
#define BZ_X_SELECTOR_2 31
|
||||
#define BZ_X_SELECTOR_3 32
|
||||
#define BZ_X_CODING_1 33
|
||||
#define BZ_X_CODING_2 34
|
||||
#define BZ_X_CODING_3 35
|
||||
#define BZ_X_MTF_1 36
|
||||
#define BZ_X_MTF_2 37
|
||||
#define BZ_X_MTF_3 38
|
||||
#define BZ_X_MTF_4 39
|
||||
#define BZ_X_MTF_5 40
|
||||
#define BZ_X_MTF_6 41
|
||||
#define BZ_X_ENDHDR_2 42
|
||||
#define BZ_X_ENDHDR_3 43
|
||||
#define BZ_X_ENDHDR_4 44
|
||||
#define BZ_X_ENDHDR_5 45
|
||||
#define BZ_X_ENDHDR_6 46
|
||||
#define BZ_X_CCRC_1 47
|
||||
#define BZ_X_CCRC_2 48
|
||||
#define BZ_X_CCRC_3 49
|
||||
#define BZ_X_CCRC_4 50
|
||||
|
||||
|
||||
|
||||
/*-- Constants for the fast MTF decoder. --*/
|
||||
|
||||
#define MTFA_SIZE 4096
|
||||
#define MTFL_SIZE 16
|
||||
|
||||
|
||||
|
||||
/*-- Structure holding all the decompression-side stuff. --*/
|
||||
|
||||
typedef
|
||||
struct {
|
||||
/* pointer back to the struct bz_stream */
|
||||
bz_stream* strm;
|
||||
|
||||
/* state indicator for this stream */
|
||||
Int32 state;
|
||||
|
||||
/* for doing the final run-length decoding */
|
||||
UChar state_out_ch;
|
||||
Int32 state_out_len;
|
||||
Bool blockRandomised;
|
||||
BZ_RAND_DECLS;
|
||||
|
||||
/* the buffer for bit stream reading */
|
||||
UInt32 bsBuff;
|
||||
Int32 bsLive;
|
||||
|
||||
/* misc administratium */
|
||||
Int32 blockSize100k;
|
||||
Bool smallDecompress;
|
||||
Int32 currBlockNo;
|
||||
Int32 verbosity;
|
||||
|
||||
/* for undoing the Burrows-Wheeler transform */
|
||||
Int32 origPtr;
|
||||
UInt32 tPos;
|
||||
Int32 k0;
|
||||
Int32 unzftab[256];
|
||||
Int32 nblock_used;
|
||||
Int32 cftab[257];
|
||||
Int32 cftabCopy[257];
|
||||
|
||||
/* for undoing the Burrows-Wheeler transform (FAST) */
|
||||
UInt32 *tt;
|
||||
|
||||
/* for undoing the Burrows-Wheeler transform (SMALL) */
|
||||
UInt16 *ll16;
|
||||
UChar *ll4;
|
||||
|
||||
/* stored and calculated CRCs */
|
||||
UInt32 storedBlockCRC;
|
||||
UInt32 storedCombinedCRC;
|
||||
UInt32 calculatedBlockCRC;
|
||||
UInt32 calculatedCombinedCRC;
|
||||
|
||||
/* map of bytes used in block */
|
||||
Int32 nInUse;
|
||||
Bool inUse[256];
|
||||
Bool inUse16[16];
|
||||
UChar seqToUnseq[256];
|
||||
|
||||
/* for decoding the MTF values */
|
||||
UChar mtfa [MTFA_SIZE];
|
||||
Int32 mtfbase[256 / MTFL_SIZE];
|
||||
UChar selector [BZ_MAX_SELECTORS];
|
||||
UChar selectorMtf[BZ_MAX_SELECTORS];
|
||||
UChar len [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
|
||||
|
||||
Int32 limit [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
|
||||
Int32 base [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
|
||||
Int32 perm [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
|
||||
Int32 minLens[BZ_N_GROUPS];
|
||||
|
||||
/* save area for scalars in the main decompress code */
|
||||
Int32 save_i;
|
||||
Int32 save_j;
|
||||
Int32 save_t;
|
||||
Int32 save_alphaSize;
|
||||
Int32 save_nGroups;
|
||||
Int32 save_nSelectors;
|
||||
Int32 save_EOB;
|
||||
Int32 save_groupNo;
|
||||
Int32 save_groupPos;
|
||||
Int32 save_nextSym;
|
||||
Int32 save_nblockMAX;
|
||||
Int32 save_nblock;
|
||||
Int32 save_es;
|
||||
Int32 save_N;
|
||||
Int32 save_curr;
|
||||
Int32 save_zt;
|
||||
Int32 save_zn;
|
||||
Int32 save_zvec;
|
||||
Int32 save_zj;
|
||||
Int32 save_gSel;
|
||||
Int32 save_gMinlen;
|
||||
Int32* save_gLimit;
|
||||
Int32* save_gBase;
|
||||
Int32* save_gPerm;
|
||||
|
||||
}
|
||||
DState;
|
||||
|
||||
|
||||
|
||||
/*-- Macros for decompression. --*/
|
||||
|
||||
#define BZ_GET_FAST(cccc) \
|
||||
/* c_tPos is unsigned, hence test < 0 is pointless. */ \
|
||||
if (s->tPos >= (UInt32)100000 * (UInt32)s->blockSize100k) return True; \
|
||||
s->tPos = s->tt[s->tPos]; \
|
||||
cccc = (UChar)(s->tPos & 0xff); \
|
||||
s->tPos >>= 8;
|
||||
|
||||
#define BZ_GET_FAST_C(cccc) \
|
||||
/* c_tPos is unsigned, hence test < 0 is pointless. */ \
|
||||
if (c_tPos >= (UInt32)100000 * (UInt32)ro_blockSize100k) return True; \
|
||||
c_tPos = c_tt[c_tPos]; \
|
||||
cccc = (UChar)(c_tPos & 0xff); \
|
||||
c_tPos >>= 8;
|
||||
|
||||
#define SET_LL4(i,n) \
|
||||
{ if (((i) & 0x1) == 0) \
|
||||
s->ll4[(i) >> 1] = (s->ll4[(i) >> 1] & 0xf0) | (n); else \
|
||||
s->ll4[(i) >> 1] = (s->ll4[(i) >> 1] & 0x0f) | ((n) << 4); \
|
||||
}
|
||||
|
||||
#define GET_LL4(i) \
|
||||
((((UInt32)(s->ll4[(i) >> 1])) >> (((i) << 2) & 0x4)) & 0xF)
|
||||
|
||||
#define SET_LL(i,n) \
|
||||
{ s->ll16[i] = (UInt16)(n & 0x0000ffff); \
|
||||
SET_LL4(i, n >> 16); \
|
||||
}
|
||||
|
||||
#define GET_LL(i) \
|
||||
(((UInt32)s->ll16[i]) | (GET_LL4(i) << 16))
|
||||
|
||||
#define BZ_GET_SMALL(cccc) \
|
||||
/* c_tPos is unsigned, hence test < 0 is pointless. */ \
|
||||
if (s->tPos >= (UInt32)100000 * (UInt32)s->blockSize100k) return True; \
|
||||
cccc = BZ2_indexIntoF ( s->tPos, s->cftab ); \
|
||||
s->tPos = GET_LL(s->tPos);
|
||||
|
||||
|
||||
/*-- externs for decompression. --*/
|
||||
|
||||
extern Int32
|
||||
BZ2_indexIntoF ( Int32, Int32* );
|
||||
|
||||
extern Int32
|
||||
BZ2_decompress ( DState* );
|
||||
|
||||
extern void
|
||||
BZ2_hbCreateDecodeTables ( Int32*, Int32*, Int32*, UChar*,
|
||||
Int32, Int32, Int32 );
|
||||
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
/*-- BZ_NO_STDIO seems to make NULL disappear on some platforms. --*/
|
||||
|
||||
#ifdef BZ_NO_STDIO
|
||||
#ifndef NULL
|
||||
#define NULL 0
|
||||
#endif
|
||||
#endif
|
||||
|
||||
|
||||
/*-------------------------------------------------------------*/
|
||||
/*--- end bzlib_private.h ---*/
|
||||
/*-------------------------------------------------------------*/
|
||||
|
|
@ -0,0 +1,672 @@
|
|||
|
||||
/*-------------------------------------------------------------*/
|
||||
/*--- Compression machinery (not incl block sorting) ---*/
|
||||
/*--- compress.c ---*/
|
||||
/*-------------------------------------------------------------*/
|
||||
|
||||
/* ------------------------------------------------------------------
|
||||
This file is part of bzip2/libbzip2, a program and library for
|
||||
lossless, block-sorting data compression.
|
||||
|
||||
bzip2/libbzip2 version 1.0.8 of 13 July 2019
|
||||
Copyright (C) 1996-2019 Julian Seward <jseward@acm.org>
|
||||
|
||||
Please read the WARNING, DISCLAIMER and PATENTS sections in the
|
||||
README file.
|
||||
|
||||
This program is released under the terms of the license contained
|
||||
in the file LICENSE.
|
||||
------------------------------------------------------------------ */
|
||||
|
||||
|
||||
/* CHANGES
|
||||
0.9.0 -- original version.
|
||||
0.9.0a/b -- no changes in this file.
|
||||
0.9.0c -- changed setting of nGroups in sendMTFValues()
|
||||
so as to do a bit better on small files
|
||||
*/
|
||||
|
||||
#include "bzlib_private.h"
|
||||
|
||||
|
||||
/*---------------------------------------------------*/
|
||||
/*--- Bit stream I/O ---*/
|
||||
/*---------------------------------------------------*/
|
||||
|
||||
/*---------------------------------------------------*/
|
||||
void BZ2_bsInitWrite ( EState* s )
|
||||
{
|
||||
s->bsLive = 0;
|
||||
s->bsBuff = 0;
|
||||
}
|
||||
|
||||
|
||||
/*---------------------------------------------------*/
|
||||
static
|
||||
void bsFinishWrite ( EState* s )
|
||||
{
|
||||
while (s->bsLive > 0) {
|
||||
s->zbits[s->numZ] = (UChar)(s->bsBuff >> 24);
|
||||
s->numZ++;
|
||||
s->bsBuff <<= 8;
|
||||
s->bsLive -= 8;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*---------------------------------------------------*/
|
||||
#define bsNEEDW(nz) \
|
||||
{ \
|
||||
while (s->bsLive >= 8) { \
|
||||
s->zbits[s->numZ] \
|
||||
= (UChar)(s->bsBuff >> 24); \
|
||||
s->numZ++; \
|
||||
s->bsBuff <<= 8; \
|
||||
s->bsLive -= 8; \
|
||||
} \
|
||||
}
|
||||
|
||||
|
||||
/*---------------------------------------------------*/
|
||||
static
|
||||
__inline__
|
||||
void bsW ( EState* s, Int32 n, UInt32 v )
|
||||
{
|
||||
bsNEEDW ( n );
|
||||
s->bsBuff |= (v << (32 - s->bsLive - n));
|
||||
s->bsLive += n;
|
||||
}
|
||||
|
||||
|
||||
/*---------------------------------------------------*/
|
||||
static
|
||||
void bsPutUInt32 ( EState* s, UInt32 u )
|
||||
{
|
||||
bsW ( s, 8, (u >> 24) & 0xffL );
|
||||
bsW ( s, 8, (u >> 16) & 0xffL );
|
||||
bsW ( s, 8, (u >> 8) & 0xffL );
|
||||
bsW ( s, 8, u & 0xffL );
|
||||
}
|
||||
|
||||
|
||||
/*---------------------------------------------------*/
|
||||
static
|
||||
void bsPutUChar ( EState* s, UChar c )
|
||||
{
|
||||
bsW( s, 8, (UInt32)c );
|
||||
}
|
||||
|
||||
|
||||
/*---------------------------------------------------*/
|
||||
/*--- The back end proper ---*/
|
||||
/*---------------------------------------------------*/
|
||||
|
||||
/*---------------------------------------------------*/
|
||||
static
|
||||
void makeMaps_e ( EState* s )
|
||||
{
|
||||
Int32 i;
|
||||
s->nInUse = 0;
|
||||
for (i = 0; i < 256; i++)
|
||||
if (s->inUse[i]) {
|
||||
s->unseqToSeq[i] = s->nInUse;
|
||||
s->nInUse++;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*---------------------------------------------------*/
|
||||
static
|
||||
void generateMTFValues ( EState* s )
|
||||
{
|
||||
UChar yy[256];
|
||||
Int32 i, j;
|
||||
Int32 zPend;
|
||||
Int32 wr;
|
||||
Int32 EOB;
|
||||
|
||||
/*
|
||||
After sorting (eg, here),
|
||||
s->arr1 [ 0 .. s->nblock-1 ] holds sorted order,
|
||||
and
|
||||
((UChar*)s->arr2) [ 0 .. s->nblock-1 ]
|
||||
holds the original block data.
|
||||
|
||||
The first thing to do is generate the MTF values,
|
||||
and put them in
|
||||
((UInt16*)s->arr1) [ 0 .. s->nblock-1 ].
|
||||
Because there are strictly fewer or equal MTF values
|
||||
than block values, ptr values in this area are overwritten
|
||||
with MTF values only when they are no longer needed.
|
||||
|
||||
The final compressed bitstream is generated into the
|
||||
area starting at
|
||||
(UChar*) (&((UChar*)s->arr2)[s->nblock])
|
||||
|
||||
These storage aliases are set up in bzCompressInit(),
|
||||
except for the last one, which is arranged in
|
||||
compressBlock().
|
||||
*/
|
||||
UInt32* ptr = s->ptr;
|
||||
UChar* block = s->block;
|
||||
UInt16* mtfv = s->mtfv;
|
||||
|
||||
makeMaps_e ( s );
|
||||
EOB = s->nInUse+1;
|
||||
|
||||
for (i = 0; i <= EOB; i++) s->mtfFreq[i] = 0;
|
||||
|
||||
wr = 0;
|
||||
zPend = 0;
|
||||
for (i = 0; i < s->nInUse; i++) yy[i] = (UChar) i;
|
||||
|
||||
for (i = 0; i < s->nblock; i++) {
|
||||
UChar ll_i;
|
||||
AssertD ( wr <= i, "generateMTFValues(1)" );
|
||||
j = ptr[i]-1; if (j < 0) j += s->nblock;
|
||||
ll_i = s->unseqToSeq[block[j]];
|
||||
AssertD ( ll_i < s->nInUse, "generateMTFValues(2a)" );
|
||||
|
||||
if (yy[0] == ll_i) {
|
||||
zPend++;
|
||||
} else {
|
||||
|
||||
if (zPend > 0) {
|
||||
zPend--;
|
||||
while (True) {
|
||||
if (zPend & 1) {
|
||||
mtfv[wr] = BZ_RUNB; wr++;
|
||||
s->mtfFreq[BZ_RUNB]++;
|
||||
} else {
|
||||
mtfv[wr] = BZ_RUNA; wr++;
|
||||
s->mtfFreq[BZ_RUNA]++;
|
||||
}
|
||||
if (zPend < 2) break;
|
||||
zPend = (zPend - 2) / 2;
|
||||
};
|
||||
zPend = 0;
|
||||
}
|
||||
{
|
||||
register UChar rtmp;
|
||||
register UChar* ryy_j;
|
||||
register UChar rll_i;
|
||||
rtmp = yy[1];
|
||||
yy[1] = yy[0];
|
||||
ryy_j = &(yy[1]);
|
||||
rll_i = ll_i;
|
||||
while ( rll_i != rtmp ) {
|
||||
register UChar rtmp2;
|
||||
ryy_j++;
|
||||
rtmp2 = rtmp;
|
||||
rtmp = *ryy_j;
|
||||
*ryy_j = rtmp2;
|
||||
};
|
||||
yy[0] = rtmp;
|
||||
j = ryy_j - &(yy[0]);
|
||||
mtfv[wr] = j+1; wr++; s->mtfFreq[j+1]++;
|
||||
}
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
if (zPend > 0) {
|
||||
zPend--;
|
||||
while (True) {
|
||||
if (zPend & 1) {
|
||||
mtfv[wr] = BZ_RUNB; wr++;
|
||||
s->mtfFreq[BZ_RUNB]++;
|
||||
} else {
|
||||
mtfv[wr] = BZ_RUNA; wr++;
|
||||
s->mtfFreq[BZ_RUNA]++;
|
||||
}
|
||||
if (zPend < 2) break;
|
||||
zPend = (zPend - 2) / 2;
|
||||
};
|
||||
zPend = 0;
|
||||
}
|
||||
|
||||
mtfv[wr] = EOB; wr++; s->mtfFreq[EOB]++;
|
||||
|
||||
s->nMTF = wr;
|
||||
}
|
||||
|
||||
|
||||
/*---------------------------------------------------*/
|
||||
#define BZ_LESSER_ICOST 0
|
||||
#define BZ_GREATER_ICOST 15
|
||||
|
||||
static
|
||||
void sendMTFValues ( EState* s )
|
||||
{
|
||||
Int32 v, t, i, j, gs, ge, totc, bt, bc, iter;
|
||||
Int32 nSelectors, alphaSize, minLen, maxLen, selCtr;
|
||||
Int32 nGroups, nBytes;
|
||||
|
||||
/*--
|
||||
UChar len [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
|
||||
is a global since the decoder also needs it.
|
||||
|
||||
Int32 code[BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
|
||||
Int32 rfreq[BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
|
||||
are also globals only used in this proc.
|
||||
Made global to keep stack frame size small.
|
||||
--*/
|
||||
|
||||
|
||||
UInt16 cost[BZ_N_GROUPS];
|
||||
Int32 fave[BZ_N_GROUPS];
|
||||
|
||||
UInt16* mtfv = s->mtfv;
|
||||
|
||||
if (s->verbosity >= 3)
|
||||
VPrintf3( " %d in block, %d after MTF & 1-2 coding, "
|
||||
"%d+2 syms in use\n",
|
||||
s->nblock, s->nMTF, s->nInUse );
|
||||
|
||||
alphaSize = s->nInUse+2;
|
||||
for (t = 0; t < BZ_N_GROUPS; t++)
|
||||
for (v = 0; v < alphaSize; v++)
|
||||
s->len[t][v] = BZ_GREATER_ICOST;
|
||||
|
||||
/*--- Decide how many coding tables to use ---*/
|
||||
AssertH ( s->nMTF > 0, 3001 );
|
||||
if (s->nMTF < 200) nGroups = 2; else
|
||||
if (s->nMTF < 600) nGroups = 3; else
|
||||
if (s->nMTF < 1200) nGroups = 4; else
|
||||
if (s->nMTF < 2400) nGroups = 5; else
|
||||
nGroups = 6;
|
||||
|
||||
/*--- Generate an initial set of coding tables ---*/
|
||||
{
|
||||
Int32 nPart, remF, tFreq, aFreq;
|
||||
|
||||
nPart = nGroups;
|
||||
remF = s->nMTF;
|
||||
gs = 0;
|
||||
while (nPart > 0) {
|
||||
tFreq = remF / nPart;
|
||||
ge = gs-1;
|
||||
aFreq = 0;
|
||||
while (aFreq < tFreq && ge < alphaSize-1) {
|
||||
ge++;
|
||||
aFreq += s->mtfFreq[ge];
|
||||
}
|
||||
|
||||
if (ge > gs
|
||||
&& nPart != nGroups && nPart != 1
|
||||
&& ((nGroups-nPart) % 2 == 1)) {
|
||||
aFreq -= s->mtfFreq[ge];
|
||||
ge--;
|
||||
}
|
||||
|
||||
if (s->verbosity >= 3)
|
||||
VPrintf5( " initial group %d, [%d .. %d], "
|
||||
"has %d syms (%4.1f%%)\n",
|
||||
nPart, gs, ge, aFreq,
|
||||
(100.0 * (float)aFreq) / (float)(s->nMTF) );
|
||||
|
||||
for (v = 0; v < alphaSize; v++)
|
||||
if (v >= gs && v <= ge)
|
||||
s->len[nPart-1][v] = BZ_LESSER_ICOST; else
|
||||
s->len[nPart-1][v] = BZ_GREATER_ICOST;
|
||||
|
||||
nPart--;
|
||||
gs = ge+1;
|
||||
remF -= aFreq;
|
||||
}
|
||||
}
|
||||
|
||||
/*---
|
||||
Iterate up to BZ_N_ITERS times to improve the tables.
|
||||
---*/
|
||||
for (iter = 0; iter < BZ_N_ITERS; iter++) {
|
||||
|
||||
for (t = 0; t < nGroups; t++) fave[t] = 0;
|
||||
|
||||
for (t = 0; t < nGroups; t++)
|
||||
for (v = 0; v < alphaSize; v++)
|
||||
s->rfreq[t][v] = 0;
|
||||
|
||||
/*---
|
||||
Set up an auxiliary length table which is used to fast-track
|
||||
the common case (nGroups == 6).
|
||||
---*/
|
||||
if (nGroups == 6) {
|
||||
for (v = 0; v < alphaSize; v++) {
|
||||
s->len_pack[v][0] = (s->len[1][v] << 16) | s->len[0][v];
|
||||
s->len_pack[v][1] = (s->len[3][v] << 16) | s->len[2][v];
|
||||
s->len_pack[v][2] = (s->len[5][v] << 16) | s->len[4][v];
|
||||
}
|
||||
}
|
||||
|
||||
nSelectors = 0;
|
||||
totc = 0;
|
||||
gs = 0;
|
||||
while (True) {
|
||||
|
||||
/*--- Set group start & end marks. --*/
|
||||
if (gs >= s->nMTF) break;
|
||||
ge = gs + BZ_G_SIZE - 1;
|
||||
if (ge >= s->nMTF) ge = s->nMTF-1;
|
||||
|
||||
/*--
|
||||
Calculate the cost of this group as coded
|
||||
by each of the coding tables.
|
||||
--*/
|
||||
for (t = 0; t < nGroups; t++) cost[t] = 0;
|
||||
|
||||
if (nGroups == 6 && 50 == ge-gs+1) {
|
||||
/*--- fast track the common case ---*/
|
||||
register UInt32 cost01, cost23, cost45;
|
||||
register UInt16 icv;
|
||||
cost01 = cost23 = cost45 = 0;
|
||||
|
||||
# define BZ_ITER(nn) \
|
||||
icv = mtfv[gs+(nn)]; \
|
||||
cost01 += s->len_pack[icv][0]; \
|
||||
cost23 += s->len_pack[icv][1]; \
|
||||
cost45 += s->len_pack[icv][2]; \
|
||||
|
||||
BZ_ITER(0); BZ_ITER(1); BZ_ITER(2); BZ_ITER(3); BZ_ITER(4);
|
||||
BZ_ITER(5); BZ_ITER(6); BZ_ITER(7); BZ_ITER(8); BZ_ITER(9);
|
||||
BZ_ITER(10); BZ_ITER(11); BZ_ITER(12); BZ_ITER(13); BZ_ITER(14);
|
||||
BZ_ITER(15); BZ_ITER(16); BZ_ITER(17); BZ_ITER(18); BZ_ITER(19);
|
||||
BZ_ITER(20); BZ_ITER(21); BZ_ITER(22); BZ_ITER(23); BZ_ITER(24);
|
||||
BZ_ITER(25); BZ_ITER(26); BZ_ITER(27); BZ_ITER(28); BZ_ITER(29);
|
||||
BZ_ITER(30); BZ_ITER(31); BZ_ITER(32); BZ_ITER(33); BZ_ITER(34);
|
||||
BZ_ITER(35); BZ_ITER(36); BZ_ITER(37); BZ_ITER(38); BZ_ITER(39);
|
||||
BZ_ITER(40); BZ_ITER(41); BZ_ITER(42); BZ_ITER(43); BZ_ITER(44);
|
||||
BZ_ITER(45); BZ_ITER(46); BZ_ITER(47); BZ_ITER(48); BZ_ITER(49);
|
||||
|
||||
# undef BZ_ITER
|
||||
|
||||
cost[0] = cost01 & 0xffff; cost[1] = cost01 >> 16;
|
||||
cost[2] = cost23 & 0xffff; cost[3] = cost23 >> 16;
|
||||
cost[4] = cost45 & 0xffff; cost[5] = cost45 >> 16;
|
||||
|
||||
} else {
|
||||
/*--- slow version which correctly handles all situations ---*/
|
||||
for (i = gs; i <= ge; i++) {
|
||||
UInt16 icv = mtfv[i];
|
||||
for (t = 0; t < nGroups; t++) cost[t] += s->len[t][icv];
|
||||
}
|
||||
}
|
||||
|
||||
/*--
|
||||
Find the coding table which is best for this group,
|
||||
and record its identity in the selector table.
|
||||
--*/
|
||||
bc = 999999999; bt = -1;
|
||||
for (t = 0; t < nGroups; t++)
|
||||
if (cost[t] < bc) { bc = cost[t]; bt = t; };
|
||||
totc += bc;
|
||||
fave[bt]++;
|
||||
s->selector[nSelectors] = bt;
|
||||
nSelectors++;
|
||||
|
||||
/*--
|
||||
Increment the symbol frequencies for the selected table.
|
||||
--*/
|
||||
if (nGroups == 6 && 50 == ge-gs+1) {
|
||||
/*--- fast track the common case ---*/
|
||||
|
||||
# define BZ_ITUR(nn) s->rfreq[bt][ mtfv[gs+(nn)] ]++
|
||||
|
||||
BZ_ITUR(0); BZ_ITUR(1); BZ_ITUR(2); BZ_ITUR(3); BZ_ITUR(4);
|
||||
BZ_ITUR(5); BZ_ITUR(6); BZ_ITUR(7); BZ_ITUR(8); BZ_ITUR(9);
|
||||
BZ_ITUR(10); BZ_ITUR(11); BZ_ITUR(12); BZ_ITUR(13); BZ_ITUR(14);
|
||||
BZ_ITUR(15); BZ_ITUR(16); BZ_ITUR(17); BZ_ITUR(18); BZ_ITUR(19);
|
||||
BZ_ITUR(20); BZ_ITUR(21); BZ_ITUR(22); BZ_ITUR(23); BZ_ITUR(24);
|
||||
BZ_ITUR(25); BZ_ITUR(26); BZ_ITUR(27); BZ_ITUR(28); BZ_ITUR(29);
|
||||
BZ_ITUR(30); BZ_ITUR(31); BZ_ITUR(32); BZ_ITUR(33); BZ_ITUR(34);
|
||||
BZ_ITUR(35); BZ_ITUR(36); BZ_ITUR(37); BZ_ITUR(38); BZ_ITUR(39);
|
||||
BZ_ITUR(40); BZ_ITUR(41); BZ_ITUR(42); BZ_ITUR(43); BZ_ITUR(44);
|
||||
BZ_ITUR(45); BZ_ITUR(46); BZ_ITUR(47); BZ_ITUR(48); BZ_ITUR(49);
|
||||
|
||||
# undef BZ_ITUR
|
||||
|
||||
} else {
|
||||
/*--- slow version which correctly handles all situations ---*/
|
||||
for (i = gs; i <= ge; i++)
|
||||
s->rfreq[bt][ mtfv[i] ]++;
|
||||
}
|
||||
|
||||
gs = ge+1;
|
||||
}
|
||||
if (s->verbosity >= 3) {
|
||||
VPrintf2 ( " pass %d: size is %d, grp uses are ",
|
||||
iter+1, totc/8 );
|
||||
for (t = 0; t < nGroups; t++)
|
||||
VPrintf1 ( "%d ", fave[t] );
|
||||
VPrintf0 ( "\n" );
|
||||
}
|
||||
|
||||
/*--
|
||||
Recompute the tables based on the accumulated frequencies.
|
||||
--*/
|
||||
/* maxLen was changed from 20 to 17 in bzip2-1.0.3. See
|
||||
comment in huffman.c for details. */
|
||||
for (t = 0; t < nGroups; t++)
|
||||
BZ2_hbMakeCodeLengths ( &(s->len[t][0]), &(s->rfreq[t][0]),
|
||||
alphaSize, 17 /*20*/ );
|
||||
}
|
||||
|
||||
|
||||
AssertH( nGroups < 8, 3002 );
|
||||
AssertH( nSelectors < 32768 &&
|
||||
nSelectors <= BZ_MAX_SELECTORS,
|
||||
3003 );
|
||||
|
||||
|
||||
/*--- Compute MTF values for the selectors. ---*/
|
||||
{
|
||||
UChar pos[BZ_N_GROUPS], ll_i, tmp2, tmp;
|
||||
for (i = 0; i < nGroups; i++) pos[i] = i;
|
||||
for (i = 0; i < nSelectors; i++) {
|
||||
ll_i = s->selector[i];
|
||||
j = 0;
|
||||
tmp = pos[j];
|
||||
while ( ll_i != tmp ) {
|
||||
j++;
|
||||
tmp2 = tmp;
|
||||
tmp = pos[j];
|
||||
pos[j] = tmp2;
|
||||
};
|
||||
pos[0] = tmp;
|
||||
s->selectorMtf[i] = j;
|
||||
}
|
||||
};
|
||||
|
||||
/*--- Assign actual codes for the tables. --*/
|
||||
for (t = 0; t < nGroups; t++) {
|
||||
minLen = 32;
|
||||
maxLen = 0;
|
||||
for (i = 0; i < alphaSize; i++) {
|
||||
if (s->len[t][i] > maxLen) maxLen = s->len[t][i];
|
||||
if (s->len[t][i] < minLen) minLen = s->len[t][i];
|
||||
}
|
||||
AssertH ( !(maxLen > 17 /*20*/ ), 3004 );
|
||||
AssertH ( !(minLen < 1), 3005 );
|
||||
BZ2_hbAssignCodes ( &(s->code[t][0]), &(s->len[t][0]),
|
||||
minLen, maxLen, alphaSize );
|
||||
}
|
||||
|
||||
/*--- Transmit the mapping table. ---*/
|
||||
{
|
||||
Bool inUse16[16];
|
||||
for (i = 0; i < 16; i++) {
|
||||
inUse16[i] = False;
|
||||
for (j = 0; j < 16; j++)
|
||||
if (s->inUse[i * 16 + j]) inUse16[i] = True;
|
||||
}
|
||||
|
||||
nBytes = s->numZ;
|
||||
for (i = 0; i < 16; i++)
|
||||
if (inUse16[i]) bsW(s,1,1); else bsW(s,1,0);
|
||||
|
||||
for (i = 0; i < 16; i++)
|
||||
if (inUse16[i])
|
||||
for (j = 0; j < 16; j++) {
|
||||
if (s->inUse[i * 16 + j]) bsW(s,1,1); else bsW(s,1,0);
|
||||
}
|
||||
|
||||
if (s->verbosity >= 3)
|
||||
VPrintf1( " bytes: mapping %d, ", s->numZ-nBytes );
|
||||
}
|
||||
|
||||
/*--- Now the selectors. ---*/
|
||||
nBytes = s->numZ;
|
||||
bsW ( s, 3, nGroups );
|
||||
bsW ( s, 15, nSelectors );
|
||||
for (i = 0; i < nSelectors; i++) {
|
||||
for (j = 0; j < s->selectorMtf[i]; j++) bsW(s,1,1);
|
||||
bsW(s,1,0);
|
||||
}
|
||||
if (s->verbosity >= 3)
|
||||
VPrintf1( "selectors %d, ", s->numZ-nBytes );
|
||||
|
||||
/*--- Now the coding tables. ---*/
|
||||
nBytes = s->numZ;
|
||||
|
||||
for (t = 0; t < nGroups; t++) {
|
||||
Int32 curr = s->len[t][0];
|
||||
bsW ( s, 5, curr );
|
||||
for (i = 0; i < alphaSize; i++) {
|
||||
while (curr < s->len[t][i]) { bsW(s,2,2); curr++; /* 10 */ };
|
||||
while (curr > s->len[t][i]) { bsW(s,2,3); curr--; /* 11 */ };
|
||||
bsW ( s, 1, 0 );
|
||||
}
|
||||
}
|
||||
|
||||
if (s->verbosity >= 3)
|
||||
VPrintf1 ( "code lengths %d, ", s->numZ-nBytes );
|
||||
|
||||
/*--- And finally, the block data proper ---*/
|
||||
nBytes = s->numZ;
|
||||
selCtr = 0;
|
||||
gs = 0;
|
||||
while (True) {
|
||||
if (gs >= s->nMTF) break;
|
||||
ge = gs + BZ_G_SIZE - 1;
|
||||
if (ge >= s->nMTF) ge = s->nMTF-1;
|
||||
AssertH ( s->selector[selCtr] < nGroups, 3006 );
|
||||
|
||||
if (nGroups == 6 && 50 == ge-gs+1) {
|
||||
/*--- fast track the common case ---*/
|
||||
UInt16 mtfv_i;
|
||||
UChar* s_len_sel_selCtr
|
||||
= &(s->len[s->selector[selCtr]][0]);
|
||||
Int32* s_code_sel_selCtr
|
||||
= &(s->code[s->selector[selCtr]][0]);
|
||||
|
||||
# define BZ_ITAH(nn) \
|
||||
mtfv_i = mtfv[gs+(nn)]; \
|
||||
bsW ( s, \
|
||||
s_len_sel_selCtr[mtfv_i], \
|
||||
s_code_sel_selCtr[mtfv_i] )
|
||||
|
||||
BZ_ITAH(0); BZ_ITAH(1); BZ_ITAH(2); BZ_ITAH(3); BZ_ITAH(4);
|
||||
BZ_ITAH(5); BZ_ITAH(6); BZ_ITAH(7); BZ_ITAH(8); BZ_ITAH(9);
|
||||
BZ_ITAH(10); BZ_ITAH(11); BZ_ITAH(12); BZ_ITAH(13); BZ_ITAH(14);
|
||||
BZ_ITAH(15); BZ_ITAH(16); BZ_ITAH(17); BZ_ITAH(18); BZ_ITAH(19);
|
||||
BZ_ITAH(20); BZ_ITAH(21); BZ_ITAH(22); BZ_ITAH(23); BZ_ITAH(24);
|
||||
BZ_ITAH(25); BZ_ITAH(26); BZ_ITAH(27); BZ_ITAH(28); BZ_ITAH(29);
|
||||
BZ_ITAH(30); BZ_ITAH(31); BZ_ITAH(32); BZ_ITAH(33); BZ_ITAH(34);
|
||||
BZ_ITAH(35); BZ_ITAH(36); BZ_ITAH(37); BZ_ITAH(38); BZ_ITAH(39);
|
||||
BZ_ITAH(40); BZ_ITAH(41); BZ_ITAH(42); BZ_ITAH(43); BZ_ITAH(44);
|
||||
BZ_ITAH(45); BZ_ITAH(46); BZ_ITAH(47); BZ_ITAH(48); BZ_ITAH(49);
|
||||
|
||||
# undef BZ_ITAH
|
||||
|
||||
} else {
|
||||
/*--- slow version which correctly handles all situations ---*/
|
||||
for (i = gs; i <= ge; i++) {
|
||||
bsW ( s,
|
||||
s->len [s->selector[selCtr]] [mtfv[i]],
|
||||
s->code [s->selector[selCtr]] [mtfv[i]] );
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
gs = ge+1;
|
||||
selCtr++;
|
||||
}
|
||||
AssertH( selCtr == nSelectors, 3007 );
|
||||
|
||||
if (s->verbosity >= 3)
|
||||
VPrintf1( "codes %d\n", s->numZ-nBytes );
|
||||
}
|
||||
|
||||
|
||||
/*---------------------------------------------------*/
|
||||
void BZ2_compressBlock ( EState* s, Bool is_last_block )
|
||||
{
|
||||
if (s->nblock > 0) {
|
||||
|
||||
BZ_FINALISE_CRC ( s->blockCRC );
|
||||
s->combinedCRC = (s->combinedCRC << 1) | (s->combinedCRC >> 31);
|
||||
s->combinedCRC ^= s->blockCRC;
|
||||
if (s->blockNo > 1) s->numZ = 0;
|
||||
|
||||
if (s->verbosity >= 2)
|
||||
VPrintf4( " block %d: crc = 0x%08x, "
|
||||
"combined CRC = 0x%08x, size = %d\n",
|
||||
s->blockNo, s->blockCRC, s->combinedCRC, s->nblock );
|
||||
|
||||
BZ2_blockSort ( s );
|
||||
}
|
||||
|
||||
s->zbits = (UChar*) (&((UChar*)s->arr2)[s->nblock]);
|
||||
|
||||
/*-- If this is the first block, create the stream header. --*/
|
||||
if (s->blockNo == 1) {
|
||||
BZ2_bsInitWrite ( s );
|
||||
bsPutUChar ( s, BZ_HDR_B );
|
||||
bsPutUChar ( s, BZ_HDR_Z );
|
||||
bsPutUChar ( s, BZ_HDR_h );
|
||||
bsPutUChar ( s, (UChar)(BZ_HDR_0 + s->blockSize100k) );
|
||||
}
|
||||
|
||||
if (s->nblock > 0) {
|
||||
|
||||
bsPutUChar ( s, 0x31 ); bsPutUChar ( s, 0x41 );
|
||||
bsPutUChar ( s, 0x59 ); bsPutUChar ( s, 0x26 );
|
||||
bsPutUChar ( s, 0x53 ); bsPutUChar ( s, 0x59 );
|
||||
|
||||
/*-- Now the block's CRC, so it is in a known place. --*/
|
||||
bsPutUInt32 ( s, s->blockCRC );
|
||||
|
||||
/*--
|
||||
Now a single bit indicating (non-)randomisation.
|
||||
As of version 0.9.5, we use a better sorting algorithm
|
||||
which makes randomisation unnecessary. So always set
|
||||
the randomised bit to 'no'. Of course, the decoder
|
||||
still needs to be able to handle randomised blocks
|
||||
so as to maintain backwards compatibility with
|
||||
older versions of bzip2.
|
||||
--*/
|
||||
bsW(s,1,0);
|
||||
|
||||
bsW ( s, 24, s->origPtr );
|
||||
generateMTFValues ( s );
|
||||
sendMTFValues ( s );
|
||||
}
|
||||
|
||||
|
||||
/*-- If this is the last block, add the stream trailer. --*/
|
||||
if (is_last_block) {
|
||||
|
||||
bsPutUChar ( s, 0x17 ); bsPutUChar ( s, 0x72 );
|
||||
bsPutUChar ( s, 0x45 ); bsPutUChar ( s, 0x38 );
|
||||
bsPutUChar ( s, 0x50 ); bsPutUChar ( s, 0x90 );
|
||||
bsPutUInt32 ( s, s->combinedCRC );
|
||||
if (s->verbosity >= 2)
|
||||
VPrintf1( " final combined CRC = 0x%08x\n ", s->combinedCRC );
|
||||
bsFinishWrite ( s );
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*-------------------------------------------------------------*/
|
||||
/*--- end compress.c ---*/
|
||||
/*-------------------------------------------------------------*/
|
||||
|
|
@ -0,0 +1,104 @@
|
|||
|
||||
/*-------------------------------------------------------------*/
|
||||
/*--- Table for doing CRCs ---*/
|
||||
/*--- crctable.c ---*/
|
||||
/*-------------------------------------------------------------*/
|
||||
|
||||
/* ------------------------------------------------------------------
|
||||
This file is part of bzip2/libbzip2, a program and library for
|
||||
lossless, block-sorting data compression.
|
||||
|
||||
bzip2/libbzip2 version 1.0.8 of 13 July 2019
|
||||
Copyright (C) 1996-2019 Julian Seward <jseward@acm.org>
|
||||
|
||||
Please read the WARNING, DISCLAIMER and PATENTS sections in the
|
||||
README file.
|
||||
|
||||
This program is released under the terms of the license contained
|
||||
in the file LICENSE.
|
||||
------------------------------------------------------------------ */
|
||||
|
||||
|
||||
#include "bzlib_private.h"
|
||||
|
||||
/*--
|
||||
I think this is an implementation of the AUTODIN-II,
|
||||
Ethernet & FDDI 32-bit CRC standard. Vaguely derived
|
||||
from code by Rob Warnock, in Section 51 of the
|
||||
comp.compression FAQ.
|
||||
--*/
|
||||
|
||||
UInt32 BZ2_crc32Table[256] = {
|
||||
|
||||
/*-- Ugly, innit? --*/
|
||||
|
||||
0x00000000L, 0x04c11db7L, 0x09823b6eL, 0x0d4326d9L,
|
||||
0x130476dcL, 0x17c56b6bL, 0x1a864db2L, 0x1e475005L,
|
||||
0x2608edb8L, 0x22c9f00fL, 0x2f8ad6d6L, 0x2b4bcb61L,
|
||||
0x350c9b64L, 0x31cd86d3L, 0x3c8ea00aL, 0x384fbdbdL,
|
||||
0x4c11db70L, 0x48d0c6c7L, 0x4593e01eL, 0x4152fda9L,
|
||||
0x5f15adacL, 0x5bd4b01bL, 0x569796c2L, 0x52568b75L,
|
||||
0x6a1936c8L, 0x6ed82b7fL, 0x639b0da6L, 0x675a1011L,
|
||||
0x791d4014L, 0x7ddc5da3L, 0x709f7b7aL, 0x745e66cdL,
|
||||
0x9823b6e0L, 0x9ce2ab57L, 0x91a18d8eL, 0x95609039L,
|
||||
0x8b27c03cL, 0x8fe6dd8bL, 0x82a5fb52L, 0x8664e6e5L,
|
||||
0xbe2b5b58L, 0xbaea46efL, 0xb7a96036L, 0xb3687d81L,
|
||||
0xad2f2d84L, 0xa9ee3033L, 0xa4ad16eaL, 0xa06c0b5dL,
|
||||
0xd4326d90L, 0xd0f37027L, 0xddb056feL, 0xd9714b49L,
|
||||
0xc7361b4cL, 0xc3f706fbL, 0xceb42022L, 0xca753d95L,
|
||||
0xf23a8028L, 0xf6fb9d9fL, 0xfbb8bb46L, 0xff79a6f1L,
|
||||
0xe13ef6f4L, 0xe5ffeb43L, 0xe8bccd9aL, 0xec7dd02dL,
|
||||
0x34867077L, 0x30476dc0L, 0x3d044b19L, 0x39c556aeL,
|
||||
0x278206abL, 0x23431b1cL, 0x2e003dc5L, 0x2ac12072L,
|
||||
0x128e9dcfL, 0x164f8078L, 0x1b0ca6a1L, 0x1fcdbb16L,
|
||||
0x018aeb13L, 0x054bf6a4L, 0x0808d07dL, 0x0cc9cdcaL,
|
||||
0x7897ab07L, 0x7c56b6b0L, 0x71159069L, 0x75d48ddeL,
|
||||
0x6b93dddbL, 0x6f52c06cL, 0x6211e6b5L, 0x66d0fb02L,
|
||||
0x5e9f46bfL, 0x5a5e5b08L, 0x571d7dd1L, 0x53dc6066L,
|
||||
0x4d9b3063L, 0x495a2dd4L, 0x44190b0dL, 0x40d816baL,
|
||||
0xaca5c697L, 0xa864db20L, 0xa527fdf9L, 0xa1e6e04eL,
|
||||
0xbfa1b04bL, 0xbb60adfcL, 0xb6238b25L, 0xb2e29692L,
|
||||
0x8aad2b2fL, 0x8e6c3698L, 0x832f1041L, 0x87ee0df6L,
|
||||
0x99a95df3L, 0x9d684044L, 0x902b669dL, 0x94ea7b2aL,
|
||||
0xe0b41de7L, 0xe4750050L, 0xe9362689L, 0xedf73b3eL,
|
||||
0xf3b06b3bL, 0xf771768cL, 0xfa325055L, 0xfef34de2L,
|
||||
0xc6bcf05fL, 0xc27dede8L, 0xcf3ecb31L, 0xcbffd686L,
|
||||
0xd5b88683L, 0xd1799b34L, 0xdc3abdedL, 0xd8fba05aL,
|
||||
0x690ce0eeL, 0x6dcdfd59L, 0x608edb80L, 0x644fc637L,
|
||||
0x7a089632L, 0x7ec98b85L, 0x738aad5cL, 0x774bb0ebL,
|
||||
0x4f040d56L, 0x4bc510e1L, 0x46863638L, 0x42472b8fL,
|
||||
0x5c007b8aL, 0x58c1663dL, 0x558240e4L, 0x51435d53L,
|
||||
0x251d3b9eL, 0x21dc2629L, 0x2c9f00f0L, 0x285e1d47L,
|
||||
0x36194d42L, 0x32d850f5L, 0x3f9b762cL, 0x3b5a6b9bL,
|
||||
0x0315d626L, 0x07d4cb91L, 0x0a97ed48L, 0x0e56f0ffL,
|
||||
0x1011a0faL, 0x14d0bd4dL, 0x19939b94L, 0x1d528623L,
|
||||
0xf12f560eL, 0xf5ee4bb9L, 0xf8ad6d60L, 0xfc6c70d7L,
|
||||
0xe22b20d2L, 0xe6ea3d65L, 0xeba91bbcL, 0xef68060bL,
|
||||
0xd727bbb6L, 0xd3e6a601L, 0xdea580d8L, 0xda649d6fL,
|
||||
0xc423cd6aL, 0xc0e2d0ddL, 0xcda1f604L, 0xc960ebb3L,
|
||||
0xbd3e8d7eL, 0xb9ff90c9L, 0xb4bcb610L, 0xb07daba7L,
|
||||
0xae3afba2L, 0xaafbe615L, 0xa7b8c0ccL, 0xa379dd7bL,
|
||||
0x9b3660c6L, 0x9ff77d71L, 0x92b45ba8L, 0x9675461fL,
|
||||
0x8832161aL, 0x8cf30badL, 0x81b02d74L, 0x857130c3L,
|
||||
0x5d8a9099L, 0x594b8d2eL, 0x5408abf7L, 0x50c9b640L,
|
||||
0x4e8ee645L, 0x4a4ffbf2L, 0x470cdd2bL, 0x43cdc09cL,
|
||||
0x7b827d21L, 0x7f436096L, 0x7200464fL, 0x76c15bf8L,
|
||||
0x68860bfdL, 0x6c47164aL, 0x61043093L, 0x65c52d24L,
|
||||
0x119b4be9L, 0x155a565eL, 0x18197087L, 0x1cd86d30L,
|
||||
0x029f3d35L, 0x065e2082L, 0x0b1d065bL, 0x0fdc1becL,
|
||||
0x3793a651L, 0x3352bbe6L, 0x3e119d3fL, 0x3ad08088L,
|
||||
0x2497d08dL, 0x2056cd3aL, 0x2d15ebe3L, 0x29d4f654L,
|
||||
0xc5a92679L, 0xc1683bceL, 0xcc2b1d17L, 0xc8ea00a0L,
|
||||
0xd6ad50a5L, 0xd26c4d12L, 0xdf2f6bcbL, 0xdbee767cL,
|
||||
0xe3a1cbc1L, 0xe760d676L, 0xea23f0afL, 0xeee2ed18L,
|
||||
0xf0a5bd1dL, 0xf464a0aaL, 0xf9278673L, 0xfde69bc4L,
|
||||
0x89b8fd09L, 0x8d79e0beL, 0x803ac667L, 0x84fbdbd0L,
|
||||
0x9abc8bd5L, 0x9e7d9662L, 0x933eb0bbL, 0x97ffad0cL,
|
||||
0xafb010b1L, 0xab710d06L, 0xa6322bdfL, 0xa2f33668L,
|
||||
0xbcb4666dL, 0xb8757bdaL, 0xb5365d03L, 0xb1f740b4L
|
||||
};
|
||||
|
||||
|
||||
/*-------------------------------------------------------------*/
|
||||
/*--- end crctable.c ---*/
|
||||
/*-------------------------------------------------------------*/
|
||||
|
|
@ -0,0 +1,652 @@
|
|||
|
||||
/*-------------------------------------------------------------*/
|
||||
/*--- Decompression machinery ---*/
|
||||
/*--- decompress.c ---*/
|
||||
/*-------------------------------------------------------------*/
|
||||
|
||||
/* ------------------------------------------------------------------
|
||||
This file is part of bzip2/libbzip2, a program and library for
|
||||
lossless, block-sorting data compression.
|
||||
|
||||
bzip2/libbzip2 version 1.0.8 of 13 July 2019
|
||||
Copyright (C) 1996-2019 Julian Seward <jseward@acm.org>
|
||||
|
||||
Please read the WARNING, DISCLAIMER and PATENTS sections in the
|
||||
README file.
|
||||
|
||||
This program is released under the terms of the license contained
|
||||
in the file LICENSE.
|
||||
------------------------------------------------------------------ */
|
||||
|
||||
|
||||
#include "bzlib_private.h"
|
||||
|
||||
|
||||
/*---------------------------------------------------*/
|
||||
static
|
||||
void makeMaps_d ( DState* s )
|
||||
{
|
||||
Int32 i;
|
||||
s->nInUse = 0;
|
||||
for (i = 0; i < 256; i++)
|
||||
if (s->inUse[i]) {
|
||||
s->seqToUnseq[s->nInUse] = i;
|
||||
s->nInUse++;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*---------------------------------------------------*/
|
||||
#define RETURN(rrr) \
|
||||
{ retVal = rrr; goto save_state_and_return; };
|
||||
|
||||
#define GET_BITS(lll,vvv,nnn) \
|
||||
case lll: s->state = lll; \
|
||||
while (True) { \
|
||||
if (s->bsLive >= nnn) { \
|
||||
UInt32 v; \
|
||||
v = (s->bsBuff >> \
|
||||
(s->bsLive-nnn)) & ((1 << nnn)-1); \
|
||||
s->bsLive -= nnn; \
|
||||
vvv = v; \
|
||||
break; \
|
||||
} \
|
||||
if (s->strm->avail_in == 0) RETURN(BZ_OK); \
|
||||
s->bsBuff \
|
||||
= (s->bsBuff << 8) | \
|
||||
((UInt32) \
|
||||
(*((UChar*)(s->strm->next_in)))); \
|
||||
s->bsLive += 8; \
|
||||
s->strm->next_in++; \
|
||||
s->strm->avail_in--; \
|
||||
s->strm->total_in_lo32++; \
|
||||
if (s->strm->total_in_lo32 == 0) \
|
||||
s->strm->total_in_hi32++; \
|
||||
}
|
||||
|
||||
#define GET_UCHAR(lll,uuu) \
|
||||
GET_BITS(lll,uuu,8)
|
||||
|
||||
#define GET_BIT(lll,uuu) \
|
||||
GET_BITS(lll,uuu,1)
|
||||
|
||||
/*---------------------------------------------------*/
|
||||
#define GET_MTF_VAL(label1,label2,lval) \
|
||||
{ \
|
||||
if (groupPos == 0) { \
|
||||
groupNo++; \
|
||||
if (groupNo >= nSelectors) \
|
||||
RETURN(BZ_DATA_ERROR); \
|
||||
groupPos = BZ_G_SIZE; \
|
||||
gSel = s->selector[groupNo]; \
|
||||
gMinlen = s->minLens[gSel]; \
|
||||
gLimit = &(s->limit[gSel][0]); \
|
||||
gPerm = &(s->perm[gSel][0]); \
|
||||
gBase = &(s->base[gSel][0]); \
|
||||
} \
|
||||
groupPos--; \
|
||||
zn = gMinlen; \
|
||||
GET_BITS(label1, zvec, zn); \
|
||||
while (1) { \
|
||||
if (zn > 20 /* the longest code */) \
|
||||
RETURN(BZ_DATA_ERROR); \
|
||||
if (zvec <= gLimit[zn]) break; \
|
||||
zn++; \
|
||||
GET_BIT(label2, zj); \
|
||||
zvec = (zvec << 1) | zj; \
|
||||
}; \
|
||||
if (zvec - gBase[zn] < 0 \
|
||||
|| zvec - gBase[zn] >= BZ_MAX_ALPHA_SIZE) \
|
||||
RETURN(BZ_DATA_ERROR); \
|
||||
lval = gPerm[zvec - gBase[zn]]; \
|
||||
}
|
||||
|
||||
|
||||
/*---------------------------------------------------*/
|
||||
Int32 BZ2_decompress ( DState* s )
|
||||
{
|
||||
UChar uc;
|
||||
Int32 retVal;
|
||||
Int32 minLen, maxLen;
|
||||
bz_stream* strm = s->strm;
|
||||
|
||||
/* stuff that needs to be saved/restored */
|
||||
Int32 i;
|
||||
Int32 j;
|
||||
Int32 t;
|
||||
Int32 alphaSize;
|
||||
Int32 nGroups;
|
||||
Int32 nSelectors;
|
||||
Int32 EOB;
|
||||
Int32 groupNo;
|
||||
Int32 groupPos;
|
||||
Int32 nextSym;
|
||||
Int32 nblockMAX;
|
||||
Int32 nblock;
|
||||
Int32 es;
|
||||
Int32 N;
|
||||
Int32 curr;
|
||||
Int32 zt;
|
||||
Int32 zn;
|
||||
Int32 zvec;
|
||||
Int32 zj;
|
||||
Int32 gSel;
|
||||
Int32 gMinlen;
|
||||
Int32* gLimit;
|
||||
Int32* gBase;
|
||||
Int32* gPerm;
|
||||
|
||||
if (s->state == BZ_X_MAGIC_1) {
|
||||
/*initialise the save area*/
|
||||
s->save_i = 0;
|
||||
s->save_j = 0;
|
||||
s->save_t = 0;
|
||||
s->save_alphaSize = 0;
|
||||
s->save_nGroups = 0;
|
||||
s->save_nSelectors = 0;
|
||||
s->save_EOB = 0;
|
||||
s->save_groupNo = 0;
|
||||
s->save_groupPos = 0;
|
||||
s->save_nextSym = 0;
|
||||
s->save_nblockMAX = 0;
|
||||
s->save_nblock = 0;
|
||||
s->save_es = 0;
|
||||
s->save_N = 0;
|
||||
s->save_curr = 0;
|
||||
s->save_zt = 0;
|
||||
s->save_zn = 0;
|
||||
s->save_zvec = 0;
|
||||
s->save_zj = 0;
|
||||
s->save_gSel = 0;
|
||||
s->save_gMinlen = 0;
|
||||
s->save_gLimit = NULL;
|
||||
s->save_gBase = NULL;
|
||||
s->save_gPerm = NULL;
|
||||
}
|
||||
|
||||
/*restore from the save area*/
|
||||
i = s->save_i;
|
||||
j = s->save_j;
|
||||
t = s->save_t;
|
||||
alphaSize = s->save_alphaSize;
|
||||
nGroups = s->save_nGroups;
|
||||
nSelectors = s->save_nSelectors;
|
||||
EOB = s->save_EOB;
|
||||
groupNo = s->save_groupNo;
|
||||
groupPos = s->save_groupPos;
|
||||
nextSym = s->save_nextSym;
|
||||
nblockMAX = s->save_nblockMAX;
|
||||
nblock = s->save_nblock;
|
||||
es = s->save_es;
|
||||
N = s->save_N;
|
||||
curr = s->save_curr;
|
||||
zt = s->save_zt;
|
||||
zn = s->save_zn;
|
||||
zvec = s->save_zvec;
|
||||
zj = s->save_zj;
|
||||
gSel = s->save_gSel;
|
||||
gMinlen = s->save_gMinlen;
|
||||
gLimit = s->save_gLimit;
|
||||
gBase = s->save_gBase;
|
||||
gPerm = s->save_gPerm;
|
||||
|
||||
retVal = BZ_OK;
|
||||
|
||||
switch (s->state) {
|
||||
|
||||
GET_UCHAR(BZ_X_MAGIC_1, uc);
|
||||
if (uc != BZ_HDR_B) RETURN(BZ_DATA_ERROR_MAGIC);
|
||||
|
||||
GET_UCHAR(BZ_X_MAGIC_2, uc);
|
||||
if (uc != BZ_HDR_Z) RETURN(BZ_DATA_ERROR_MAGIC);
|
||||
|
||||
GET_UCHAR(BZ_X_MAGIC_3, uc)
|
||||
if (uc != BZ_HDR_h) RETURN(BZ_DATA_ERROR_MAGIC);
|
||||
|
||||
GET_BITS(BZ_X_MAGIC_4, s->blockSize100k, 8)
|
||||
if (s->blockSize100k < (BZ_HDR_0 + 1) ||
|
||||
s->blockSize100k > (BZ_HDR_0 + 9)) RETURN(BZ_DATA_ERROR_MAGIC);
|
||||
s->blockSize100k -= BZ_HDR_0;
|
||||
|
||||
if (s->smallDecompress) {
|
||||
s->ll16 = BZALLOC( s->blockSize100k * 100000 * sizeof(UInt16) );
|
||||
s->ll4 = BZALLOC(
|
||||
((1 + s->blockSize100k * 100000) >> 1) * sizeof(UChar)
|
||||
);
|
||||
if (s->ll16 == NULL || s->ll4 == NULL) RETURN(BZ_MEM_ERROR);
|
||||
} else {
|
||||
s->tt = BZALLOC( s->blockSize100k * 100000 * sizeof(Int32) );
|
||||
if (s->tt == NULL) RETURN(BZ_MEM_ERROR);
|
||||
}
|
||||
|
||||
GET_UCHAR(BZ_X_BLKHDR_1, uc);
|
||||
|
||||
if (uc == 0x17) goto endhdr_2;
|
||||
if (uc != 0x31) RETURN(BZ_DATA_ERROR);
|
||||
GET_UCHAR(BZ_X_BLKHDR_2, uc);
|
||||
if (uc != 0x41) RETURN(BZ_DATA_ERROR);
|
||||
GET_UCHAR(BZ_X_BLKHDR_3, uc);
|
||||
if (uc != 0x59) RETURN(BZ_DATA_ERROR);
|
||||
GET_UCHAR(BZ_X_BLKHDR_4, uc);
|
||||
if (uc != 0x26) RETURN(BZ_DATA_ERROR);
|
||||
GET_UCHAR(BZ_X_BLKHDR_5, uc);
|
||||
if (uc != 0x53) RETURN(BZ_DATA_ERROR);
|
||||
GET_UCHAR(BZ_X_BLKHDR_6, uc);
|
||||
if (uc != 0x59) RETURN(BZ_DATA_ERROR);
|
||||
|
||||
s->currBlockNo++;
|
||||
if (s->verbosity >= 2)
|
||||
VPrintf1 ( "\n [%d: huff+mtf ", s->currBlockNo );
|
||||
|
||||
s->storedBlockCRC = 0;
|
||||
GET_UCHAR(BZ_X_BCRC_1, uc);
|
||||
s->storedBlockCRC = (s->storedBlockCRC << 8) | ((UInt32)uc);
|
||||
GET_UCHAR(BZ_X_BCRC_2, uc);
|
||||
s->storedBlockCRC = (s->storedBlockCRC << 8) | ((UInt32)uc);
|
||||
GET_UCHAR(BZ_X_BCRC_3, uc);
|
||||
s->storedBlockCRC = (s->storedBlockCRC << 8) | ((UInt32)uc);
|
||||
GET_UCHAR(BZ_X_BCRC_4, uc);
|
||||
s->storedBlockCRC = (s->storedBlockCRC << 8) | ((UInt32)uc);
|
||||
|
||||
GET_BITS(BZ_X_RANDBIT, s->blockRandomised, 1);
|
||||
|
||||
s->origPtr = 0;
|
||||
GET_UCHAR(BZ_X_ORIGPTR_1, uc);
|
||||
s->origPtr = (s->origPtr << 8) | ((Int32)uc);
|
||||
GET_UCHAR(BZ_X_ORIGPTR_2, uc);
|
||||
s->origPtr = (s->origPtr << 8) | ((Int32)uc);
|
||||
GET_UCHAR(BZ_X_ORIGPTR_3, uc);
|
||||
s->origPtr = (s->origPtr << 8) | ((Int32)uc);
|
||||
|
||||
if (s->origPtr < 0)
|
||||
RETURN(BZ_DATA_ERROR);
|
||||
if (s->origPtr > 10 + 100000*s->blockSize100k)
|
||||
RETURN(BZ_DATA_ERROR);
|
||||
|
||||
/*--- Receive the mapping table ---*/
|
||||
for (i = 0; i < 16; i++) {
|
||||
GET_BIT(BZ_X_MAPPING_1, uc);
|
||||
if (uc == 1)
|
||||
s->inUse16[i] = True; else
|
||||
s->inUse16[i] = False;
|
||||
}
|
||||
|
||||
for (i = 0; i < 256; i++) s->inUse[i] = False;
|
||||
|
||||
for (i = 0; i < 16; i++)
|
||||
if (s->inUse16[i])
|
||||
for (j = 0; j < 16; j++) {
|
||||
GET_BIT(BZ_X_MAPPING_2, uc);
|
||||
if (uc == 1) s->inUse[i * 16 + j] = True;
|
||||
}
|
||||
makeMaps_d ( s );
|
||||
if (s->nInUse == 0) RETURN(BZ_DATA_ERROR);
|
||||
alphaSize = s->nInUse+2;
|
||||
|
||||
/*--- Now the selectors ---*/
|
||||
GET_BITS(BZ_X_SELECTOR_1, nGroups, 3);
|
||||
if (nGroups < 2 || nGroups > BZ_N_GROUPS) RETURN(BZ_DATA_ERROR);
|
||||
GET_BITS(BZ_X_SELECTOR_2, nSelectors, 15);
|
||||
if (nSelectors < 1) RETURN(BZ_DATA_ERROR);
|
||||
for (i = 0; i < nSelectors; i++) {
|
||||
j = 0;
|
||||
while (True) {
|
||||
GET_BIT(BZ_X_SELECTOR_3, uc);
|
||||
if (uc == 0) break;
|
||||
j++;
|
||||
if (j >= nGroups) RETURN(BZ_DATA_ERROR);
|
||||
}
|
||||
/* Having more than BZ_MAX_SELECTORS doesn't make much sense
|
||||
since they will never be used, but some implementations might
|
||||
"round up" the number of selectors, so just ignore those. */
|
||||
if (i < BZ_MAX_SELECTORS)
|
||||
s->selectorMtf[i] = j;
|
||||
}
|
||||
if (nSelectors > BZ_MAX_SELECTORS)
|
||||
nSelectors = BZ_MAX_SELECTORS;
|
||||
|
||||
/*--- Undo the MTF values for the selectors. ---*/
|
||||
{
|
||||
UChar pos[BZ_N_GROUPS], tmp, v;
|
||||
for (v = 0; v < nGroups; v++) pos[v] = v;
|
||||
|
||||
for (i = 0; i < nSelectors; i++) {
|
||||
v = s->selectorMtf[i];
|
||||
tmp = pos[v];
|
||||
while (v > 0) { pos[v] = pos[v-1]; v--; }
|
||||
pos[0] = tmp;
|
||||
s->selector[i] = tmp;
|
||||
}
|
||||
}
|
||||
|
||||
/*--- Now the coding tables ---*/
|
||||
for (t = 0; t < nGroups; t++) {
|
||||
GET_BITS(BZ_X_CODING_1, curr, 5);
|
||||
for (i = 0; i < alphaSize; i++) {
|
||||
while (True) {
|
||||
if (curr < 1 || curr > 20) RETURN(BZ_DATA_ERROR);
|
||||
GET_BIT(BZ_X_CODING_2, uc);
|
||||
if (uc == 0) break;
|
||||
GET_BIT(BZ_X_CODING_3, uc);
|
||||
if (uc == 0) curr++; else curr--;
|
||||
}
|
||||
s->len[t][i] = curr;
|
||||
}
|
||||
}
|
||||
|
||||
/*--- Create the Huffman decoding tables ---*/
|
||||
for (t = 0; t < nGroups; t++) {
|
||||
minLen = 32;
|
||||
maxLen = 0;
|
||||
for (i = 0; i < alphaSize; i++) {
|
||||
if (s->len[t][i] > maxLen) maxLen = s->len[t][i];
|
||||
if (s->len[t][i] < minLen) minLen = s->len[t][i];
|
||||
}
|
||||
BZ2_hbCreateDecodeTables (
|
||||
&(s->limit[t][0]),
|
||||
&(s->base[t][0]),
|
||||
&(s->perm[t][0]),
|
||||
&(s->len[t][0]),
|
||||
minLen, maxLen, alphaSize
|
||||
);
|
||||
s->minLens[t] = minLen;
|
||||
}
|
||||
|
||||
/*--- Now the MTF values ---*/
|
||||
|
||||
EOB = s->nInUse+1;
|
||||
nblockMAX = 100000 * s->blockSize100k;
|
||||
groupNo = -1;
|
||||
groupPos = 0;
|
||||
|
||||
for (i = 0; i <= 255; i++) s->unzftab[i] = 0;
|
||||
|
||||
/*-- MTF init --*/
|
||||
{
|
||||
Int32 ii, jj, kk;
|
||||
kk = MTFA_SIZE-1;
|
||||
for (ii = 256 / MTFL_SIZE - 1; ii >= 0; ii--) {
|
||||
for (jj = MTFL_SIZE-1; jj >= 0; jj--) {
|
||||
s->mtfa[kk] = (UChar)(ii * MTFL_SIZE + jj);
|
||||
kk--;
|
||||
}
|
||||
s->mtfbase[ii] = kk + 1;
|
||||
}
|
||||
}
|
||||
/*-- end MTF init --*/
|
||||
|
||||
nblock = 0;
|
||||
GET_MTF_VAL(BZ_X_MTF_1, BZ_X_MTF_2, nextSym);
|
||||
|
||||
while (True) {
|
||||
|
||||
if (nextSym == EOB) break;
|
||||
|
||||
if (nextSym == BZ_RUNA || nextSym == BZ_RUNB) {
|
||||
|
||||
es = -1;
|
||||
N = 1;
|
||||
do {
|
||||
/* Check that N doesn't get too big, so that es doesn't
|
||||
go negative. The maximum value that can be
|
||||
RUNA/RUNB encoded is equal to the block size (post
|
||||
the initial RLE), viz, 900k, so bounding N at 2
|
||||
million should guard against overflow without
|
||||
rejecting any legitimate inputs. */
|
||||
if (N >= 2*1024*1024) RETURN(BZ_DATA_ERROR);
|
||||
if (nextSym == BZ_RUNA) es = es + (0+1) * N; else
|
||||
if (nextSym == BZ_RUNB) es = es + (1+1) * N;
|
||||
N = N * 2;
|
||||
GET_MTF_VAL(BZ_X_MTF_3, BZ_X_MTF_4, nextSym);
|
||||
}
|
||||
while (nextSym == BZ_RUNA || nextSym == BZ_RUNB);
|
||||
|
||||
es++;
|
||||
uc = s->seqToUnseq[ s->mtfa[s->mtfbase[0]] ];
|
||||
s->unzftab[uc] += es;
|
||||
|
||||
if (s->smallDecompress)
|
||||
while (es > 0) {
|
||||
if (nblock >= nblockMAX) RETURN(BZ_DATA_ERROR);
|
||||
s->ll16[nblock] = (UInt16)uc;
|
||||
nblock++;
|
||||
es--;
|
||||
}
|
||||
else
|
||||
while (es > 0) {
|
||||
if (nblock >= nblockMAX) RETURN(BZ_DATA_ERROR);
|
||||
s->tt[nblock] = (UInt32)uc;
|
||||
nblock++;
|
||||
es--;
|
||||
};
|
||||
|
||||
continue;
|
||||
|
||||
} else {
|
||||
|
||||
if (nblock >= nblockMAX) RETURN(BZ_DATA_ERROR);
|
||||
|
||||
/*-- uc = MTF ( nextSym-1 ) --*/
|
||||
{
|
||||
Int32 ii, jj, kk, pp, lno, off;
|
||||
UInt32 nn;
|
||||
nn = (UInt32)(nextSym - 1);
|
||||
|
||||
if (nn < MTFL_SIZE) {
|
||||
/* avoid general-case expense */
|
||||
pp = s->mtfbase[0];
|
||||
uc = s->mtfa[pp+nn];
|
||||
while (nn > 3) {
|
||||
Int32 z = pp+nn;
|
||||
s->mtfa[(z) ] = s->mtfa[(z)-1];
|
||||
s->mtfa[(z)-1] = s->mtfa[(z)-2];
|
||||
s->mtfa[(z)-2] = s->mtfa[(z)-3];
|
||||
s->mtfa[(z)-3] = s->mtfa[(z)-4];
|
||||
nn -= 4;
|
||||
}
|
||||
while (nn > 0) {
|
||||
s->mtfa[(pp+nn)] = s->mtfa[(pp+nn)-1]; nn--;
|
||||
};
|
||||
s->mtfa[pp] = uc;
|
||||
} else {
|
||||
/* general case */
|
||||
lno = nn / MTFL_SIZE;
|
||||
off = nn % MTFL_SIZE;
|
||||
pp = s->mtfbase[lno] + off;
|
||||
uc = s->mtfa[pp];
|
||||
while (pp > s->mtfbase[lno]) {
|
||||
s->mtfa[pp] = s->mtfa[pp-1]; pp--;
|
||||
};
|
||||
s->mtfbase[lno]++;
|
||||
while (lno > 0) {
|
||||
s->mtfbase[lno]--;
|
||||
s->mtfa[s->mtfbase[lno]]
|
||||
= s->mtfa[s->mtfbase[lno-1] + MTFL_SIZE - 1];
|
||||
lno--;
|
||||
}
|
||||
s->mtfbase[0]--;
|
||||
s->mtfa[s->mtfbase[0]] = uc;
|
||||
if (s->mtfbase[0] == 0) {
|
||||
kk = MTFA_SIZE-1;
|
||||
for (ii = 256 / MTFL_SIZE-1; ii >= 0; ii--) {
|
||||
for (jj = MTFL_SIZE-1; jj >= 0; jj--) {
|
||||
s->mtfa[kk] = s->mtfa[s->mtfbase[ii] + jj];
|
||||
kk--;
|
||||
}
|
||||
s->mtfbase[ii] = kk + 1;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
/*-- end uc = MTF ( nextSym-1 ) --*/
|
||||
|
||||
s->unzftab[s->seqToUnseq[uc]]++;
|
||||
if (s->smallDecompress)
|
||||
s->ll16[nblock] = (UInt16)(s->seqToUnseq[uc]); else
|
||||
s->tt[nblock] = (UInt32)(s->seqToUnseq[uc]);
|
||||
nblock++;
|
||||
|
||||
GET_MTF_VAL(BZ_X_MTF_5, BZ_X_MTF_6, nextSym);
|
||||
continue;
|
||||
}
|
||||
}
|
||||
|
||||
/* Now we know what nblock is, we can do a better sanity
|
||||
check on s->origPtr.
|
||||
*/
|
||||
if (s->origPtr < 0 || s->origPtr >= nblock)
|
||||
RETURN(BZ_DATA_ERROR);
|
||||
|
||||
/*-- Set up cftab to facilitate generation of T^(-1) --*/
|
||||
/* Check: unzftab entries in range. */
|
||||
for (i = 0; i <= 255; i++) {
|
||||
if (s->unzftab[i] < 0 || s->unzftab[i] > nblock)
|
||||
RETURN(BZ_DATA_ERROR);
|
||||
}
|
||||
/* Actually generate cftab. */
|
||||
s->cftab[0] = 0;
|
||||
for (i = 1; i <= 256; i++) s->cftab[i] = s->unzftab[i-1];
|
||||
for (i = 1; i <= 256; i++) s->cftab[i] += s->cftab[i-1];
|
||||
/* Check: cftab entries in range. */
|
||||
for (i = 0; i <= 256; i++) {
|
||||
if (s->cftab[i] < 0 || s->cftab[i] > nblock) {
|
||||
/* s->cftab[i] can legitimately be == nblock */
|
||||
RETURN(BZ_DATA_ERROR);
|
||||
}
|
||||
}
|
||||
/* Check: cftab entries non-descending. */
|
||||
for (i = 1; i <= 256; i++) {
|
||||
if (s->cftab[i-1] > s->cftab[i]) {
|
||||
RETURN(BZ_DATA_ERROR);
|
||||
}
|
||||
}
|
||||
|
||||
s->state_out_len = 0;
|
||||
s->state_out_ch = 0;
|
||||
BZ_INITIALISE_CRC ( s->calculatedBlockCRC );
|
||||
s->state = BZ_X_OUTPUT;
|
||||
if (s->verbosity >= 2) VPrintf0 ( "rt+rld" );
|
||||
|
||||
if (s->smallDecompress) {
|
||||
|
||||
/*-- Make a copy of cftab, used in generation of T --*/
|
||||
for (i = 0; i <= 256; i++) s->cftabCopy[i] = s->cftab[i];
|
||||
|
||||
/*-- compute the T vector --*/
|
||||
for (i = 0; i < nblock; i++) {
|
||||
uc = (UChar)(s->ll16[i]);
|
||||
SET_LL(i, s->cftabCopy[uc]);
|
||||
s->cftabCopy[uc]++;
|
||||
}
|
||||
|
||||
/*-- Compute T^(-1) by pointer reversal on T --*/
|
||||
i = s->origPtr;
|
||||
j = GET_LL(i);
|
||||
do {
|
||||
Int32 tmp = GET_LL(j);
|
||||
SET_LL(j, i);
|
||||
i = j;
|
||||
j = tmp;
|
||||
}
|
||||
while (i != s->origPtr);
|
||||
|
||||
s->tPos = s->origPtr;
|
||||
s->nblock_used = 0;
|
||||
if (s->blockRandomised) {
|
||||
BZ_RAND_INIT_MASK;
|
||||
BZ_GET_SMALL(s->k0); s->nblock_used++;
|
||||
BZ_RAND_UPD_MASK; s->k0 ^= BZ_RAND_MASK;
|
||||
} else {
|
||||
BZ_GET_SMALL(s->k0); s->nblock_used++;
|
||||
}
|
||||
|
||||
} else {
|
||||
|
||||
/*-- compute the T^(-1) vector --*/
|
||||
for (i = 0; i < nblock; i++) {
|
||||
uc = (UChar)(s->tt[i] & 0xff);
|
||||
s->tt[s->cftab[uc]] |= (i << 8);
|
||||
s->cftab[uc]++;
|
||||
}
|
||||
|
||||
s->tPos = s->tt[s->origPtr] >> 8;
|
||||
s->nblock_used = 0;
|
||||
if (s->blockRandomised) {
|
||||
BZ_RAND_INIT_MASK;
|
||||
BZ_GET_FAST(s->k0); s->nblock_used++;
|
||||
BZ_RAND_UPD_MASK; s->k0 ^= BZ_RAND_MASK;
|
||||
} else {
|
||||
BZ_GET_FAST(s->k0); s->nblock_used++;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
RETURN(BZ_OK);
|
||||
|
||||
|
||||
|
||||
endhdr_2:
|
||||
|
||||
GET_UCHAR(BZ_X_ENDHDR_2, uc);
|
||||
if (uc != 0x72) RETURN(BZ_DATA_ERROR);
|
||||
GET_UCHAR(BZ_X_ENDHDR_3, uc);
|
||||
if (uc != 0x45) RETURN(BZ_DATA_ERROR);
|
||||
GET_UCHAR(BZ_X_ENDHDR_4, uc);
|
||||
if (uc != 0x38) RETURN(BZ_DATA_ERROR);
|
||||
GET_UCHAR(BZ_X_ENDHDR_5, uc);
|
||||
if (uc != 0x50) RETURN(BZ_DATA_ERROR);
|
||||
GET_UCHAR(BZ_X_ENDHDR_6, uc);
|
||||
if (uc != 0x90) RETURN(BZ_DATA_ERROR);
|
||||
|
||||
s->storedCombinedCRC = 0;
|
||||
GET_UCHAR(BZ_X_CCRC_1, uc);
|
||||
s->storedCombinedCRC = (s->storedCombinedCRC << 8) | ((UInt32)uc);
|
||||
GET_UCHAR(BZ_X_CCRC_2, uc);
|
||||
s->storedCombinedCRC = (s->storedCombinedCRC << 8) | ((UInt32)uc);
|
||||
GET_UCHAR(BZ_X_CCRC_3, uc);
|
||||
s->storedCombinedCRC = (s->storedCombinedCRC << 8) | ((UInt32)uc);
|
||||
GET_UCHAR(BZ_X_CCRC_4, uc);
|
||||
s->storedCombinedCRC = (s->storedCombinedCRC << 8) | ((UInt32)uc);
|
||||
|
||||
s->state = BZ_X_IDLE;
|
||||
RETURN(BZ_STREAM_END);
|
||||
|
||||
default: AssertH ( False, 4001 );
|
||||
}
|
||||
|
||||
AssertH ( False, 4002 );
|
||||
|
||||
save_state_and_return:
|
||||
|
||||
s->save_i = i;
|
||||
s->save_j = j;
|
||||
s->save_t = t;
|
||||
s->save_alphaSize = alphaSize;
|
||||
s->save_nGroups = nGroups;
|
||||
s->save_nSelectors = nSelectors;
|
||||
s->save_EOB = EOB;
|
||||
s->save_groupNo = groupNo;
|
||||
s->save_groupPos = groupPos;
|
||||
s->save_nextSym = nextSym;
|
||||
s->save_nblockMAX = nblockMAX;
|
||||
s->save_nblock = nblock;
|
||||
s->save_es = es;
|
||||
s->save_N = N;
|
||||
s->save_curr = curr;
|
||||
s->save_zt = zt;
|
||||
s->save_zn = zn;
|
||||
s->save_zvec = zvec;
|
||||
s->save_zj = zj;
|
||||
s->save_gSel = gSel;
|
||||
s->save_gMinlen = gMinlen;
|
||||
s->save_gLimit = gLimit;
|
||||
s->save_gBase = gBase;
|
||||
s->save_gPerm = gPerm;
|
||||
|
||||
return retVal;
|
||||
}
|
||||
|
||||
|
||||
/*-------------------------------------------------------------*/
|
||||
/*--- end decompress.c ---*/
|
||||
/*-------------------------------------------------------------*/
|
||||
|
|
@ -0,0 +1,205 @@
|
|||
|
||||
/*-------------------------------------------------------------*/
|
||||
/*--- Huffman coding low-level stuff ---*/
|
||||
/*--- huffman.c ---*/
|
||||
/*-------------------------------------------------------------*/
|
||||
|
||||
/* ------------------------------------------------------------------
|
||||
This file is part of bzip2/libbzip2, a program and library for
|
||||
lossless, block-sorting data compression.
|
||||
|
||||
bzip2/libbzip2 version 1.0.8 of 13 July 2019
|
||||
Copyright (C) 1996-2019 Julian Seward <jseward@acm.org>
|
||||
|
||||
Please read the WARNING, DISCLAIMER and PATENTS sections in the
|
||||
README file.
|
||||
|
||||
This program is released under the terms of the license contained
|
||||
in the file LICENSE.
|
||||
------------------------------------------------------------------ */
|
||||
|
||||
|
||||
#include "bzlib_private.h"
|
||||
|
||||
/*---------------------------------------------------*/
|
||||
#define WEIGHTOF(zz0) ((zz0) & 0xffffff00)
|
||||
#define DEPTHOF(zz1) ((zz1) & 0x000000ff)
|
||||
#define MYMAX(zz2,zz3) ((zz2) > (zz3) ? (zz2) : (zz3))
|
||||
|
||||
#define ADDWEIGHTS(zw1,zw2) \
|
||||
(WEIGHTOF(zw1)+WEIGHTOF(zw2)) | \
|
||||
(1 + MYMAX(DEPTHOF(zw1),DEPTHOF(zw2)))
|
||||
|
||||
#define UPHEAP(z) \
|
||||
{ \
|
||||
Int32 zz, tmp; \
|
||||
zz = z; tmp = heap[zz]; \
|
||||
while (weight[tmp] < weight[heap[zz >> 1]]) { \
|
||||
heap[zz] = heap[zz >> 1]; \
|
||||
zz >>= 1; \
|
||||
} \
|
||||
heap[zz] = tmp; \
|
||||
}
|
||||
|
||||
#define DOWNHEAP(z) \
|
||||
{ \
|
||||
Int32 zz, yy, tmp; \
|
||||
zz = z; tmp = heap[zz]; \
|
||||
while (True) { \
|
||||
yy = zz << 1; \
|
||||
if (yy > nHeap) break; \
|
||||
if (yy < nHeap && \
|
||||
weight[heap[yy+1]] < weight[heap[yy]]) \
|
||||
yy++; \
|
||||
if (weight[tmp] < weight[heap[yy]]) break; \
|
||||
heap[zz] = heap[yy]; \
|
||||
zz = yy; \
|
||||
} \
|
||||
heap[zz] = tmp; \
|
||||
}
|
||||
|
||||
|
||||
/*---------------------------------------------------*/
|
||||
void BZ2_hbMakeCodeLengths ( UChar *len,
|
||||
Int32 *freq,
|
||||
Int32 alphaSize,
|
||||
Int32 maxLen )
|
||||
{
|
||||
/*--
|
||||
Nodes and heap entries run from 1. Entry 0
|
||||
for both the heap and nodes is a sentinel.
|
||||
--*/
|
||||
Int32 nNodes, nHeap, n1, n2, i, j, k;
|
||||
Bool tooLong;
|
||||
|
||||
Int32 heap [ BZ_MAX_ALPHA_SIZE + 2 ];
|
||||
Int32 weight [ BZ_MAX_ALPHA_SIZE * 2 ];
|
||||
Int32 parent [ BZ_MAX_ALPHA_SIZE * 2 ];
|
||||
|
||||
for (i = 0; i < alphaSize; i++)
|
||||
weight[i+1] = (freq[i] == 0 ? 1 : freq[i]) << 8;
|
||||
|
||||
while (True) {
|
||||
|
||||
nNodes = alphaSize;
|
||||
nHeap = 0;
|
||||
|
||||
heap[0] = 0;
|
||||
weight[0] = 0;
|
||||
parent[0] = -2;
|
||||
|
||||
for (i = 1; i <= alphaSize; i++) {
|
||||
parent[i] = -1;
|
||||
nHeap++;
|
||||
heap[nHeap] = i;
|
||||
UPHEAP(nHeap);
|
||||
}
|
||||
|
||||
AssertH( nHeap < (BZ_MAX_ALPHA_SIZE+2), 2001 );
|
||||
|
||||
while (nHeap > 1) {
|
||||
n1 = heap[1]; heap[1] = heap[nHeap]; nHeap--; DOWNHEAP(1);
|
||||
n2 = heap[1]; heap[1] = heap[nHeap]; nHeap--; DOWNHEAP(1);
|
||||
nNodes++;
|
||||
parent[n1] = parent[n2] = nNodes;
|
||||
weight[nNodes] = ADDWEIGHTS(weight[n1], weight[n2]);
|
||||
parent[nNodes] = -1;
|
||||
nHeap++;
|
||||
heap[nHeap] = nNodes;
|
||||
UPHEAP(nHeap);
|
||||
}
|
||||
|
||||
AssertH( nNodes < (BZ_MAX_ALPHA_SIZE * 2), 2002 );
|
||||
|
||||
tooLong = False;
|
||||
for (i = 1; i <= alphaSize; i++) {
|
||||
j = 0;
|
||||
k = i;
|
||||
while (parent[k] >= 0) { k = parent[k]; j++; }
|
||||
len[i-1] = j;
|
||||
if (j > maxLen) tooLong = True;
|
||||
}
|
||||
|
||||
if (! tooLong) break;
|
||||
|
||||
/* 17 Oct 04: keep-going condition for the following loop used
|
||||
to be 'i < alphaSize', which missed the last element,
|
||||
theoretically leading to the possibility of the compressor
|
||||
looping. However, this count-scaling step is only needed if
|
||||
one of the generated Huffman code words is longer than
|
||||
maxLen, which up to and including version 1.0.2 was 20 bits,
|
||||
which is extremely unlikely. In version 1.0.3 maxLen was
|
||||
changed to 17 bits, which has minimal effect on compression
|
||||
ratio, but does mean this scaling step is used from time to
|
||||
time, enough to verify that it works.
|
||||
|
||||
This means that bzip2-1.0.3 and later will only produce
|
||||
Huffman codes with a maximum length of 17 bits. However, in
|
||||
order to preserve backwards compatibility with bitstreams
|
||||
produced by versions pre-1.0.3, the decompressor must still
|
||||
handle lengths of up to 20. */
|
||||
|
||||
for (i = 1; i <= alphaSize; i++) {
|
||||
j = weight[i] >> 8;
|
||||
j = 1 + (j / 2);
|
||||
weight[i] = j << 8;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*---------------------------------------------------*/
|
||||
void BZ2_hbAssignCodes ( Int32 *code,
|
||||
UChar *length,
|
||||
Int32 minLen,
|
||||
Int32 maxLen,
|
||||
Int32 alphaSize )
|
||||
{
|
||||
Int32 n, vec, i;
|
||||
|
||||
vec = 0;
|
||||
for (n = minLen; n <= maxLen; n++) {
|
||||
for (i = 0; i < alphaSize; i++)
|
||||
if (length[i] == n) { code[i] = vec; vec++; };
|
||||
vec <<= 1;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*---------------------------------------------------*/
|
||||
void BZ2_hbCreateDecodeTables ( Int32 *limit,
|
||||
Int32 *base,
|
||||
Int32 *perm,
|
||||
UChar *length,
|
||||
Int32 minLen,
|
||||
Int32 maxLen,
|
||||
Int32 alphaSize )
|
||||
{
|
||||
Int32 pp, i, j, vec;
|
||||
|
||||
pp = 0;
|
||||
for (i = minLen; i <= maxLen; i++)
|
||||
for (j = 0; j < alphaSize; j++)
|
||||
if (length[j] == i) { perm[pp] = j; pp++; };
|
||||
|
||||
for (i = 0; i < BZ_MAX_CODE_LEN; i++) base[i] = 0;
|
||||
for (i = 0; i < alphaSize; i++) base[length[i]+1]++;
|
||||
|
||||
for (i = 1; i < BZ_MAX_CODE_LEN; i++) base[i] += base[i-1];
|
||||
|
||||
for (i = 0; i < BZ_MAX_CODE_LEN; i++) limit[i] = 0;
|
||||
vec = 0;
|
||||
|
||||
for (i = minLen; i <= maxLen; i++) {
|
||||
vec += (base[i+1] - base[i]);
|
||||
limit[i] = vec-1;
|
||||
vec <<= 1;
|
||||
}
|
||||
for (i = minLen + 1; i <= maxLen; i++)
|
||||
base[i] = ((limit[i-1] + 1) << 1) - base[i];
|
||||
}
|
||||
|
||||
|
||||
/*-------------------------------------------------------------*/
|
||||
/*--- end huffman.c ---*/
|
||||
/*-------------------------------------------------------------*/
|
||||
|
|
@ -0,0 +1,84 @@
|
|||
|
||||
/*-------------------------------------------------------------*/
|
||||
/*--- Table for randomising repetitive blocks ---*/
|
||||
/*--- randtable.c ---*/
|
||||
/*-------------------------------------------------------------*/
|
||||
|
||||
/* ------------------------------------------------------------------
|
||||
This file is part of bzip2/libbzip2, a program and library for
|
||||
lossless, block-sorting data compression.
|
||||
|
||||
bzip2/libbzip2 version 1.0.8 of 13 July 2019
|
||||
Copyright (C) 1996-2019 Julian Seward <jseward@acm.org>
|
||||
|
||||
Please read the WARNING, DISCLAIMER and PATENTS sections in the
|
||||
README file.
|
||||
|
||||
This program is released under the terms of the license contained
|
||||
in the file LICENSE.
|
||||
------------------------------------------------------------------ */
|
||||
|
||||
|
||||
#include "bzlib_private.h"
|
||||
|
||||
|
||||
/*---------------------------------------------*/
|
||||
Int32 BZ2_rNums[512] = {
|
||||
619, 720, 127, 481, 931, 816, 813, 233, 566, 247,
|
||||
985, 724, 205, 454, 863, 491, 741, 242, 949, 214,
|
||||
733, 859, 335, 708, 621, 574, 73, 654, 730, 472,
|
||||
419, 436, 278, 496, 867, 210, 399, 680, 480, 51,
|
||||
878, 465, 811, 169, 869, 675, 611, 697, 867, 561,
|
||||
862, 687, 507, 283, 482, 129, 807, 591, 733, 623,
|
||||
150, 238, 59, 379, 684, 877, 625, 169, 643, 105,
|
||||
170, 607, 520, 932, 727, 476, 693, 425, 174, 647,
|
||||
73, 122, 335, 530, 442, 853, 695, 249, 445, 515,
|
||||
909, 545, 703, 919, 874, 474, 882, 500, 594, 612,
|
||||
641, 801, 220, 162, 819, 984, 589, 513, 495, 799,
|
||||
161, 604, 958, 533, 221, 400, 386, 867, 600, 782,
|
||||
382, 596, 414, 171, 516, 375, 682, 485, 911, 276,
|
||||
98, 553, 163, 354, 666, 933, 424, 341, 533, 870,
|
||||
227, 730, 475, 186, 263, 647, 537, 686, 600, 224,
|
||||
469, 68, 770, 919, 190, 373, 294, 822, 808, 206,
|
||||
184, 943, 795, 384, 383, 461, 404, 758, 839, 887,
|
||||
715, 67, 618, 276, 204, 918, 873, 777, 604, 560,
|
||||
951, 160, 578, 722, 79, 804, 96, 409, 713, 940,
|
||||
652, 934, 970, 447, 318, 353, 859, 672, 112, 785,
|
||||
645, 863, 803, 350, 139, 93, 354, 99, 820, 908,
|
||||
609, 772, 154, 274, 580, 184, 79, 626, 630, 742,
|
||||
653, 282, 762, 623, 680, 81, 927, 626, 789, 125,
|
||||
411, 521, 938, 300, 821, 78, 343, 175, 128, 250,
|
||||
170, 774, 972, 275, 999, 639, 495, 78, 352, 126,
|
||||
857, 956, 358, 619, 580, 124, 737, 594, 701, 612,
|
||||
669, 112, 134, 694, 363, 992, 809, 743, 168, 974,
|
||||
944, 375, 748, 52, 600, 747, 642, 182, 862, 81,
|
||||
344, 805, 988, 739, 511, 655, 814, 334, 249, 515,
|
||||
897, 955, 664, 981, 649, 113, 974, 459, 893, 228,
|
||||
433, 837, 553, 268, 926, 240, 102, 654, 459, 51,
|
||||
686, 754, 806, 760, 493, 403, 415, 394, 687, 700,
|
||||
946, 670, 656, 610, 738, 392, 760, 799, 887, 653,
|
||||
978, 321, 576, 617, 626, 502, 894, 679, 243, 440,
|
||||
680, 879, 194, 572, 640, 724, 926, 56, 204, 700,
|
||||
707, 151, 457, 449, 797, 195, 791, 558, 945, 679,
|
||||
297, 59, 87, 824, 713, 663, 412, 693, 342, 606,
|
||||
134, 108, 571, 364, 631, 212, 174, 643, 304, 329,
|
||||
343, 97, 430, 751, 497, 314, 983, 374, 822, 928,
|
||||
140, 206, 73, 263, 980, 736, 876, 478, 430, 305,
|
||||
170, 514, 364, 692, 829, 82, 855, 953, 676, 246,
|
||||
369, 970, 294, 750, 807, 827, 150, 790, 288, 923,
|
||||
804, 378, 215, 828, 592, 281, 565, 555, 710, 82,
|
||||
896, 831, 547, 261, 524, 462, 293, 465, 502, 56,
|
||||
661, 821, 976, 991, 658, 869, 905, 758, 745, 193,
|
||||
768, 550, 608, 933, 378, 286, 215, 979, 792, 961,
|
||||
61, 688, 793, 644, 986, 403, 106, 366, 905, 644,
|
||||
372, 567, 466, 434, 645, 210, 389, 550, 919, 135,
|
||||
780, 773, 635, 389, 707, 100, 626, 958, 165, 504,
|
||||
920, 176, 193, 713, 857, 265, 203, 50, 668, 108,
|
||||
645, 990, 626, 197, 510, 357, 358, 850, 858, 364,
|
||||
936, 638
|
||||
};
|
||||
|
||||
|
||||
/*-------------------------------------------------------------*/
|
||||
/*--- end randtable.c ---*/
|
||||
/*-------------------------------------------------------------*/
|
||||
|
|
@ -35,6 +35,7 @@
|
|||
<AdditionalIncludeDirectories>$(CoreDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
|
||||
<AdditionalIncludeDirectories>$(ExternalsDir);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
|
||||
<AdditionalIncludeDirectories>$(ExternalsDir)Bochs_disasm;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
|
||||
<AdditionalIncludeDirectories>$(ExternalsDir)bzip2;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
|
||||
<AdditionalIncludeDirectories>$(ExternalsDir)cpp-optparse;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
|
||||
<AdditionalIncludeDirectories>$(ExternalsDir)FreeSurround\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
|
||||
<AdditionalIncludeDirectories>$(ExternalsDir)cubeb\include;$(ExternalsDir)cubeb\msvc;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
|
||||
|
|
|
|||
|
|
@ -1,7 +1,7 @@
|
|||
|
||||
Microsoft Visual Studio Solution File, Format Version 12.00
|
||||
# Visual Studio Version 16
|
||||
VisualStudioVersion = 16.0.29509.3
|
||||
VisualStudioVersion = 16.0.29519.181
|
||||
MinimumVisualStudioVersion = 10.0.40219.1
|
||||
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Dolphin", "Core\DolphinQt\DolphinQt.vcxproj", "{FA3FA62B-6F58-4B86-9453-4D149940A066}"
|
||||
EndProject
|
||||
|
|
@ -99,6 +99,8 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "D3DCommon", "Core\VideoBack
|
|||
EndProject
|
||||
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "DolphinNoGUI", "Core\DolphinNoGUI\DolphinNoGUI.vcxproj", "{974E563D-23F8-4E8F-9083-F62876B04E08}"
|
||||
EndProject
|
||||
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "bzip2", "..\Externals\bzip2\bzip2.vcxproj", "{1D8C51D2-FFA4-418E-B183-9F42B6A6717E}"
|
||||
EndProject
|
||||
Global
|
||||
GlobalSection(SolutionConfigurationPlatforms) = preSolution
|
||||
Debug|ARM64 = Debug|ARM64
|
||||
|
|
@ -459,6 +461,14 @@ Global
|
|||
{974E563D-23F8-4E8F-9083-F62876B04E08}.Debug|x64.ActiveCfg = Debug|x64
|
||||
{974E563D-23F8-4E8F-9083-F62876B04E08}.Release|ARM64.ActiveCfg = Release|ARM64
|
||||
{974E563D-23F8-4E8F-9083-F62876B04E08}.Release|x64.ActiveCfg = Release|x64
|
||||
{1D8C51D2-FFA4-418E-B183-9F42B6A6717E}.Debug|ARM64.ActiveCfg = Debug|ARM64
|
||||
{1D8C51D2-FFA4-418E-B183-9F42B6A6717E}.Debug|ARM64.Build.0 = Debug|ARM64
|
||||
{1D8C51D2-FFA4-418E-B183-9F42B6A6717E}.Debug|x64.ActiveCfg = Debug|x64
|
||||
{1D8C51D2-FFA4-418E-B183-9F42B6A6717E}.Debug|x64.Build.0 = Debug|x64
|
||||
{1D8C51D2-FFA4-418E-B183-9F42B6A6717E}.Release|ARM64.ActiveCfg = Release|ARM64
|
||||
{1D8C51D2-FFA4-418E-B183-9F42B6A6717E}.Release|ARM64.Build.0 = Release|ARM64
|
||||
{1D8C51D2-FFA4-418E-B183-9F42B6A6717E}.Release|x64.ActiveCfg = Release|x64
|
||||
{1D8C51D2-FFA4-418E-B183-9F42B6A6717E}.Release|x64.Build.0 = Release|x64
|
||||
EndGlobalSection
|
||||
GlobalSection(SolutionProperties) = preSolution
|
||||
HideSolutionNode = FALSE
|
||||
|
|
@ -502,6 +512,7 @@ Global
|
|||
{4C3B2264-EA73-4A7B-9CFE-65B0FD635EBB} = {87ADDFF9-5768-4DA2-A33B-2477593D6677}
|
||||
{570215B7-E32F-4438-95AE-C8D955F9FCA3} = {AAD1BCD6-9804-44A5-A5FC-4782EA00E9D4}
|
||||
{DEA96CF2-F237-4A1A-B32F-C916769EFB50} = {AAD1BCD6-9804-44A5-A5FC-4782EA00E9D4}
|
||||
{1D8C51D2-FFA4-418E-B183-9F42B6A6717E} = {87ADDFF9-5768-4DA2-A33B-2477593D6677}
|
||||
EndGlobalSection
|
||||
GlobalSection(ExtensibilityGlobals) = postSolution
|
||||
SolutionGuid = {64B0A343-3B94-4522-9C24-6937FE5EFB22}
|
||||
|
|
|
|||
Loading…
Reference in New Issue